[JeepSnake]

While probably thought of more as a "cruiser" muffler, I'll throw in a recommendation for Hushpower.

I went from side pipes to undercar exhaust with 2.25" dia pipes and 12" long Hushpowers. These units are marketed as resonators to use in conjunction with the longer (18", I think) Hushpowers. However, used alone, the 12" units have the perfect sound for a Cobra, with the benefits of a compact and insulated case. I had mine black ceramic coated, and they simply disappear underneath the car.

I have had multiple comments that the exhaust sounds "just like 1965." Can't beat that!