I have a set of Maremont turbo mufflers on my Corvair engine. Tha whole exhaust from valve-to-tip is only 4 feet long.

It sounds like an Austin Healey that my neighbor had when I was in high school.

Mostly low-and mid-tones, but when you open the throttle you get a nice "crackling" sound...like ripping canvas.

I suggested Flowmasters because of their extensive research and the cool sound bytes on their website.

Every car will sound different, even with the same mufflers. Variables are: muffler distance from engine, muffler distance from tip, inlet/outlet configuration, pipe size, muffler size, chamber design, case thickness, clamped-or-welded, pipe gauge, headers or manifolds, engine breathing, induction, catalyst, tip design, exhaust system mounting points, etc..., etc...

Buy a used set, if possible and try them. Otherwise, it is expensive trial-and-error until you get the all-important exhaust note you are craving.

Side note...I can't hear the exhaust in my Corvair because it is all behind the passenger compartment. The only time I get to hear it is when I am behind the car, tuning the engine.