This is what i got 92 rs 305 has edlebrock performer Carb intake adapted to the Tbi has pacesetter headers cat delete flowmaster getting lt1 cam open element now i was wondering about how much of a improvement would it make and is there a big sufferance between the y pipe setup an tru duals

 

This is a lil off your topic but how's your car sound with that exhaust setup, I got stock till the flowmaster

 

The headers are not on yet but the exhaust sounds goodbnow