if you were to build ur own turbo kit, u would have to kno what kind of piping to get. choosing a turbo shouldnt be a problem, most teg owners go with a T3/T4 turbo. I have no idea what kind of piping is necessary, but most likely u wanna go with piping that comes in a turbo KIT. I dunno, i kinda wanna get a T3/T4 turbo and get my own piping, but i dunno what to get! So i guess ill hafta do what shmoo did and get the greddy kit. Unless any of you kno what kinda piping to get...