MustangRS2

I NEED SOME HELP CHOOSING THE BEST THROTTLE BODY AND PLENUM FOR MY 2002 ROUSH STAGE 2...ALSO SUGGESTIONS ABOUT UNDERPULLEYS WHAT BRAND IS THE BEST FOR MY CAR.???

stevednmc

Throttle body is up to you. Is it supercharged or turbocharged? if not go no bigger than 70mm, 75mm at the most. Accufab is supposed to be pretty good. I just today installed a trickflow plenum and 75mm bbk.
As far as underdrive pulleys, My understanding is alot of people like the steeda ones because they are not piggypack style.

And turn you capslock off..stop yelleing at me!...lol...