CODE
[DYNAMICS]
verified = 0
MIScaleX = 3.200
MIScaleY = 5.400
MIScaleZ = 2.200
CofGOffsetX = 0.000
CofGOffsetY = 0.370
CofGRatioZ = 0.480
wheelInertia = 2.500
wheelMass = 5.000
gripScale = 2.000
transverseGripScale = 1.240
forwardGripScale = 1.880
forwardGripScale2 = 1.530
backwardGripScale = 1.210
slidingGripScale = 1.180
surfaceRoughness = 0.000
frontGripScale = 1.000
rearGripScale = 1.000
frontTransverseGripScale = 0.995
rearTransverseGripScale = 1.015
tyreSlip = 0.090
tyreSlipMinimumScale = 3.000
transverseTyreSlipScale = 0.880
frontTyreSlipScale = 1.000
rearTyreSlipScale = 0.900
loadTransfer = 1.000
loadDependence = 0.050
transverseLoadTransfer = 0.750
airFriction = 0.430
rollingFriction = 0.100
transverseAirFrictionScale = 0.500
downForce = 2.200
downForceRatioZ = 0.000
constantDownForce = 0.350
antiSpin = 900.000
antiFlip = 10000.000
catSpring = 250.000
airFrictionTorque = 0.000
steerTimeMinimum = 0.430
steerTimeMaximum = 0.500
steerReturnTimeScale = 0.200
steerLossScale1 = 5.000
steerLossScale2 = 15.000
minimumSteerScale = 1.460
slidingSteerScale1 = 50.000
slidingSteerScale2 = 0.520
steerCorrection = 0.000
stabilityControl = 0.000
steeringLimit = 0.650
frontSpringConstant = 5.700
frontSpringDampingBump = 1.600
frontSpringDampingRelease = 4.000
rearSpringConstant = 5.600
rearSpringDampingBump = 1.600
rearSpringDampingRelease = 4.000
springProgression = 0.500
frontAntiRoll = 70.000
rearAntiRoll = 70.000
maxSuspensionMovement = 0.100
maxSuspensionMovement2 = 0.100
frontWheelBaseScale = 1.000
rearToe = 0.030
suspensionAngle = 0.300
brakeType = 1
frontBrakeForce = 3.000
rearBrakeForce = 2.500
ABSBrakeBalance = 1.000
handbrakeForce = 1.000
tractionControl = 0
tractionControlReverse = 0
tyreSlipModel = 0
driveBalance = 0.600
rearDifferential = 0.200
frontDifferential = 0.050
midDifferential = 0.050
engineBraking = 1.350
engineBrakingInternal = 1.500
engineInertia = 0.100
turboInertia = 4.000
turboFriction = 1.350
turboMaxRPM = 10000.000
turboOverdrive = 20.000
maxBoost = 10.000
boostRPM = 4000.000
maxRevs = 9000.000
gearDownRatio = 0.850
audioRevLimit = 7000.000
idleRevs = 750.000
startOffRevs = 3000.000
startOffRevs2 = 7000.000
tractionControlSlipScale = 0.100
tractionControlSlipScaleR = 1.000
torqueCurve0 = 1.000
torqueCurve1 = 1.000
torqueCurve2 = 1.000
torqueCurve3 = 1.000
torqueCurve4 = 1.000
torqueCurve5 = 1.000
torqueCurve6 = 1.000
torqueCurve7 = 1.000
torqueCurve8 = 1.000
torqueCurve9 = 1.000
torqueCurve10 = 1.000
clutchDelay = 0.010
wheelSpinSpeed = 20.000
suspensionScale = 0.500
collisionScale = 1.000
frontSlipScale = 0.500
rearSlipScale = 0.500
engineVibrationScale = 0.500
engineResonanceScale = 0.500
engineResonanceRPM = 4000.000
frontCornerDistance = 0.300
rearCornerDistance = 0.250
mass = 255.000
driveType = 0
turboCharged = 1
peakTorque = 9000.000
revLimit = 8200.000
topGear = 6
finalRatio = 4.110
gearRatios0 = 0.625
gearRatios1 = 0.000
gearRatios2 = 0.625
gearRatios3 = 0.500
gearRatios4 = 0.375
gearRatios5 = 0.250
gearRatios6 = 0.125
gearRatios7 = 0.001
TyreDiameter = 0.770

Corvette C5R
CODE
[DYNAMICS]
verified = 0
MIScaleX = 2.850
MIScaleY = 4.800
MIScaleZ = 1.950
CofGOffsetX = 0.000
CofGOffsetY = 0.425
CofGRatioZ = 0.530
wheelInertia = 2.500
wheelMass = 11.000
gripScale = 1.500
transverseGripScale = 1.170
forwardGripScale = 0.840
forwardGripScale2 = 0.780
backwardGripScale = 1.390
slidingGripScale = 1.800
surfaceRoughness = 0.000
frontGripScale = 1.000
rearGripScale = 1.000
frontTransverseGripScale = 0.983
rearTransverseGripScale = 1.020
tyreSlip = 0.080
tyreSlipMinimumScale = 3.000
transverseTyreSlipScale = 0.880
frontTyreSlipScale = 1.000
rearTyreSlipScale = 0.880
loadTransfer = 1.000
loadDependence = 0.050
transverseLoadTransfer = 0.600
airFriction = 0.500
rollingFriction = 0.100
transverseAirFrictionScale = 0.500
downForce = 0.550
downForceRatioZ = 0.000
constantDownForce = 0.380
antiSpin = 0.000
antiFlip = 10000.000
catSpring = 280.000
airFrictionTorque = 0.000
steerTimeMinimum = 0.300
steerTimeMaximum = 0.400
steerReturnTimeScale = 0.150
steerLossScale1 = 5.000
steerLossScale2 = 15.000
minimumSteerScale = 1.500
slidingSteerScale1 = 50.000
slidingSteerScale2 = 0.500
steerCorrection = 0.000
stabilityControl = 0.000
steeringLimit = 0.650
frontSpringConstant = 7.057
frontSpringDampingBump = 5.400
frontSpringDampingRelease = 10.800
rearSpringConstant = 6.012
rearSpringDampingBump = 4.600
rearSpringDampingRelease = 9.200
springProgression = 0.150
frontAntiRoll = 60.000
rearAntiRoll = 70.000
maxSuspensionMovement = 0.080
maxSuspensionMovement2 = 0.100
frontWheelBaseScale = 1.000
rearToe = 0.100
suspensionAngle = -0.500
brakeType = 65537
frontBrakeForce = 1.000
rearBrakeForce = 1.500
ABSBrakeBalance = 0.500
handbrakeForce = 0.862
tractionControl = 0
tractionControlReverse = 1
tyreSlipModel = 0
driveBalance = 0.500
rearDifferential = 0.063
frontDifferential = 0.000
midDifferential = 0.000
engineBraking = 1.300
engineBrakingInternal = 2.000
engineInertia = 0.200
turboInertia = 1.000
turboFriction = 3.120
turboMaxRPM = 7000.00
turboOverdrive = 10.000
maxBoost = 15.000
boostRPM = 0.000
maxRevs = 7000.000
gearDownRatio = 0.810
audioRevLimit = 7000.000
idleRevs = 900.000
startOffRevs = 1000.000
startOffRevs2 = 2000.000
tractionControlSlipScale = 1.000
tractionControlSlipScaleR = 9.000
torqueCurve0 = 0.770
torqueCurve1 = 0.830
torqueCurve2 = 0.870
torqueCurve3 = 0.890
torqueCurve4 = 0.950
torqueCurve5 = 1.000
torqueCurve6 = 0.980
torqueCurve7 = 0.940
torqueCurve8 = 0.900
torqueCurve9 = 0.800
torqueCurve10 = 0.680
clutchDelay = 0.100
wheelSpinSpeed = 20.000
suspensionScale = 0.510
collisionScale = 1.000
frontSlipScale = 0.450
rearSlipScale = 0.520
engineVibrationScale = 3.000
engineResonanceScale = 0.200
engineResonanceRPM = 4000.000
frontCornerDistance = 0.300
rearCornerDistance = 0.250
mass = 1150.000
driveType = 0
turboCharged = 0
peakTorque = 800.00
revLimit = 7000.000
topGear = 6
finalRatio = 3.110
gearRatios0 = 2.980
gearRatios1 = 0.000
gearRatios2 = 2.980
gearRatios3 = 1.990
gearRatios4 = 1.500
gearRatios5 = 1.200
gearRatios6 = 0.830
gearRatios7 = 0.560
TyreDiameter = 0.664
I matched all the C5R Specifications that I could. Probably could be tweaked. Just overwrite your Z06 file, or do what I did and clone your Z06 and Rename it to C5R :-D
Here's a link for my cloning car method: http://forums.xbox-s...howtopic=367173
Have Fun!
EDIT
I just wanted to add a few notes to these dyamnics. I wanted to show the changes.
Mass, Torque, Gear Ratios, Spring Rate, Dampening/Rebound. Rev Limit, Rear Toe, Camber, Hand Brake Force and Rear Differential. These are some grip tweaking too, but I cant remember what exactly was done. Thise file was edited numerous times to my liking. Booting up PGR2 to test file