^^Just get a glasspack...I have a buddy with a 3800 in an SE and it is a 3" catless DP with a 3" single system all the way back to a Flowmaster Super 44 with what I think is a 24" Glasspack and it has a GT2 cam and ported manifolds...it sounds pretty wicked.
I bet that thing sounds pretty mean.
New to me ---- 1999 Grand Prix GTP 216K miles and counting
SOLD----1997 Grand Prix SE 3.8 -- 1K miles from the 200k club.