The thing about the SLP LM cat-back system is that it is the SAME exact thing as a custom-made straight-pipe set-up, except for the 3" intermediate pipe vs the factory 2 3/4 one. And that resonator isn't really a resonator, only a slightly larger peice of hollow piping. So basically, you could have any decent exhaust shop make you this for less than half the cost of the Loudmouth. Throw a cheap bullet muffler on the stock I-pipe to clean up the sound a little(now becomes the Dynomouth). A $35 cutout ownz all price-wise if you don't mind dumping the exhaust under your car. Trust me, they all sound about the same(very unrefined/raspy) with the Dynomouth having a better tone.

Of all the cat-back systems available, the GMMG has the best tone(most muscular) to me. It may be very expensive, but you get what ya pay for. While true duals sound the best overall IMO.

Mike

 

I would def. go with the Loudmouth