I pretty much agree with Riggs. Only two things help 3800s sound better:

-Performance camshaft
-Higher compression (L36 sounds better than L67)

Cammed L36 based builds sound pretty good with loud exhaust. The rest of us are stuck with raspy, wheezy sounds.

 

here's a XP cam L67 with resonator, 3" exhaust, no cat, and 40 series copy cat flowmaster.

http://s39.photobucket.com/albums/e1...t=MVI_0926.flv

 

Ive had both flowmasters and SLP. both of which are pretty nice... SLP is a lot nicer IMO but I never had it on my 3400. I put it on my 4.6 dohc on the stang... is going to sound a LOT different.


Honestly, flowmasters on my 3400 were great, but ive heard by a lot of people they dont sound as well on a 3800. Do a few youtube clips and go from there. just know, you can get a deeper tone (to an extent) by doing things like headers and adding a CAI.

 

i like the sound of any flowmasters on the 'stang

 

Sounds pretty good.