HP twin 57s2003Slobra said:I would probably find which catback suits you and then weld in a pair of Dynomax Ultra Flow Welded. They are a straight threw design and will probably flow the best. They are also a quiet muffler, until WOT.
You could also get a pair of Dynomax Bullets, but that would be stupid loud.
The dynomax Ultra Flow Welded flow about 1300 CFM.
I am pretty sure they also make a full 3" exhaust with those Mufflers but I am not sure if it was for a SRA or IRS.
Goodluck!
***Which Kit did you buy??***