I have always used Flowmaster 40-series mufflers on my hot rods and muscle cars.

Has anyone put them on a Challenger yet?

I am tempted to hack the big muffler box out, weld in a set of Flowmasters, then hack out the resonators and weld in some pipe. I can do it myself, so it will not be expensive. That said, part of me wants to remove the entire system in-tact so I can put it back on someday if I ever wish to sell the car (or if I get old and cranky and want it to be quiet!). Flowmaster does not list a cat-back system for Challengers yet.

What have you guys done?