I've got the 2.5L with no MSDS and a bat y-pipe. I replaced the resonator and mufflers with magnaflows and I really like the sound, plus it was a whole lot cheaper than a whole cat back. I noticed a little gain in power and I really love the sound. No rasp, just a deep kinda growl. I don't know how much difference in sound it would be with the 3L and MSDS but for my setup it sounds pretty good.

Formerly known as Sneaku I MISS MY BABY!!! '00 Blk CSVT #1087/2150 built 12/23/99