Quote Originally Posted by AntiCristo
trust me... Perrin uppipe, perrin 3'' downpipe, and the best free flowing exhaust out there for the rex.. 3" HKS hipower/carbon ti

after that^: cobb accessport
Blitz Nur Spec-R is a good 3" too And the sound is freaking AWESOME

And yes on the Cobb AP. Before you purchase it tho, check into OpenEcu. It's pretty new but it's lookin pretty good (and inexpensive).