i just got my car back wed. with my freshly built motor that im breaking in right now. you can see all my stuff in my sig. i was wondering i want to reach 400whp. im wondering what will be the easiest way to get there. by buying a kit and just upgrading the turbocharger or just getting a custom turbo kit, also which standalone would be the best for the buck.

 

check out the group buys on the drag kit and Fmax kit they are two good places to start.