cam, heads, togs, 3" to dual 2.5", generic 4" single outlet exhaust tips:
went from no cat to dual polished dynomaxs - so so, not a good sound at all other than idle, horrid cabin resonance. Kinda hard to describe without a sound clip, but lets just say "untuned, uncontrolled sound" just blah.
no cat, no res, no mufflers, exhaust exiting under car after the rear 3" to 2.5" y - did for fun, could actually hear the car about 3 miles out of town when at WOT. "Sign of the apocalypse."
no cat, resonator, dual original 40 series flowmasters - had the nastiest sounding idle ever, especially with my old tune that had my idle speed turned down a notch. Sitting in the car at 55 mph for long periods of time would give you a headache. Seriously. Loudest mufflers ever on my car. Didn't even sound like a car during acceleration, just horrible. "Made baby Jesus cry."
Magnaflow 3" catalytic converter, no resonator (put one on, really didn't make much of a difference so we left it off) dual cherry bomb vortex'* - A co worker had on of these mufflers on his dodge ram, gave a nice stock sound but had a nice deep sound to it otherwise. Tried these, Borlas, and a set of magnaflows while the car was on the lift. All 3 are a non chambered straight through design, but the vortexs were very, very slightly quieter, cheaper and had a better sound. To our ears anyway, but we listened to that exhaust alot that night. Calmed the cam lope sound at idle which I didn't like too much but made the car nice to ride in again. Rasp during acceleration sounds much better.
But as previously stated, all 3800s sound like crap when they aren't idling. Keep the stock mufflers as long as you can.
"Going Off the Rails On the Swayzie Train"