I prefer glass packs or those Dynomax "straight-thru" type of mufflers, kind of like just resonators, then dumped near the rear axle, and then even add some chrome flare tips at the ends. I love the resonance, the hum, and the amplification of the exhaust sound from under the car. I've got Hemi mufflers dumped under my 'vert and it sounds pretty good (I've got a nice cam) but just a tad too quiet. I've got Flowmasters on my notchback, but I don't like their sound at all......it IS too tinny.