I just bought 2 Mac 2.5 Prochamber muffers for my 97 GT, i dont have money for a mid pipe yet, but i sure hope it will be alot louder than stock. I think the macs are about the best mustang sound u can get. Bought them for 56.52 each off ebay, brand new.

 

Flowpaths i ment

 

Cool, get a midpipe quick and do all the exhaust at the same time.

 

I just got my Mac installed yesterday. You'll have no problem telling its not stock. When they got done with mine I couldn't go home i rode around watching peoples reactions as i passed them, the whole time i have this silly *** grim on my face. Its plenty loud for me but, the mid pipe has to be done to get the performance gains.

 

i love my mac off road h-pipe and mac pro dumps.

 

Yea the dump's are sweeeeeeet!!