i made a nissan skyline just like brian's on 2 fast 2 furious.
all you need to do to the outside is make it silver, with 6 spoke wheels, blue underglow neon, and for the vinyls, choose the stripe set and use the top 2 stripe vinyls combined and do whatevr you want with the performance and everything else
i did the performance so it sounds as close to the real car as possible
man! it is simple to make it sound like in real... use exhaust package 2 i think and it will sound like the real thing.