I would start with the same brand of header that the h-pipe is. That would help ensure the fit-up.
exhaust normally gives anywhere between 5 hp-20hp depending on engine setup.
every little bit helps. A TB will help with restriction of air going in. but no real power gains. you should be fine with the stock TB since there's no plans for the intake or heads. if intake or head upgrade, porting or aftermarket, is to be done then the TB would be in order.
Good luck, and have fun!
thad
__________________
90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.
|