3" or 2.5" Cat?
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From: Fox Lake, Illinois
Car: 1991 RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 3.08 lt. slip
3" or 2.5" Cat?
My hedman y-pipe is 2.5". Cat back exhaust is stock tubing flowmaster 80 seris muffler. I may do 3" cat back in the future. 350TBI headers, mild cam..... Should I put on a 2.5 or 3 " cat?
Thanks, Jono
Thanks, Jono
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