I want the look of the dual upturned chrome or stainless tip mufflers I see on all kinds of cars but I don't want to sacrifice interior guietness. I want to be able to drive on the highway and not have droning like I did with my cobra gave me a headache. Any recomendations would be cool.

Get a tip. Weld it to your muffler, you'll have the looks, but no sound.