Mufflers or Cat Back?

[AJ99MustangGT]

I have an MAC full length headers and prochamber and i would like to know what will sound best...i want loud and aggressive but with out a lot of drone... i was lookin at getttin flowmasters, but i wanted to know if there is a differnce between gettin a complete cat back system, or just gettin some mufflers welded in... anyhelp would be appreciated.

 

[JoeySperz]

cat back has wider diamater piping which reduces back pressure, which is the whole point of changing an exhaust.if you already have the LTs and prochamber, I would go with a full cat-back.

 

[mogs01gt]

if you got a prochamber, get some FlowPaths from MAC. I would do the catback instead of welding in mufflers. Looks nicer.