Hey guys I'm Matt from north alabama. I have a 2003 chevy 2500hd with the 6.0L 364 c.i. So far all that has been done performance wise is K&N cold air intake, hooker headers, hypertech performance chip, and straight pipes. I am trying to get 600+ rwhp/tq out of it with a single turbo. Any help from y'all will be greatly appreciated.