if you dont find it there later on....
SPOILER.....(down)
After goto takes you to his yacht you have to use t3-m4 to go into voggas warehouse. after you get the codes three hk-50 droids attack you. on one of them it will drop the chasis on his remains...thats how i got mine. How ever i find that stupid droid annoying....Opion: Gaurnear haes how hk-47 talks....lol