I've got a 1987 Firebird, with a 2.8 MPFI. My exhaust just rusted out and im planning on putting a high flow cat-back on it. Ive been looking at the dynomax super-turbo cat-back and the dyno-max high flow cat. Is this a good combination and are they good components that sound good together. What about catco cats.

 

Sounds like what i have; my catalytic convertor was sold under "products for power" (PFP) but was supposedly made by Dynomax. It's a good sounding setup; and ya sure as hell can't beat the price!