Well, I have been working on it, but really seeing no results. I copied the gta3.img file over to my pc, then used IMG Tool 1.3 to add ex: banshee.txd, and banshee.dff to the img archive. I reuploaded it, and tried it out. Turns out the car is still the same, and I saw no results as stated above.
Not sure what I am doing wrong or maybe if something such as a saved game file, or cache that stores the textures or data temporarily.
Let me know if anyone can get this to work. It would be nice to drive my BMW, and Skyline around lol.
Let's get this working.