I want to piece together my own cat-back, and the only one I've heard that I've really liked is the GMPP cat-back. I know from searching that it is made by Borla, but does anyone happen to know which muffler is used in it?

 

If you find this out let me know. I wanna do a custom dual but really wanna get the GMPP sport sound.

 

a lot of the sound, mostly the high pitch or deep tone, has to do w/ the resonator. a long resonator w/ a good muffler, not a rice cannon, will sound just as deep

 

Thats something else I thought about, a round straight through 12" muffler, into a normal borla, or magnaflow muffler.