My cousins z71 has an sts turbo on it, 40% injectors, hp tuning and stock tranny. He wants to start racing this thing but he has no idea where to start upgrading. I know he needs a tranny upgrade, doubt his rear end will hold over 450, need water meth injection, tie rod sleeves....what else? Can you do 4wd launches with 1500's? Do they make t-case braces for them? Any other ideas how to make this thing go?