Inliners International Forums General Discussion Engines Whats a good exhaust thats sounds muscular?

I'm running a 308 inch Hudson hornet flathead 6 in my wife's '40 Hudson 2dr sedan. 402 lift 280 duration (advertised) cam, Edelbrock 500cfm carb, GM HEI ignition, and Clifford dual outlet tube headers. my exhaust is two 2" tubes into a Y collector, through a Flowmaster two chamber muffler, and a single 2 1/2" pipe all the way out the back. It sounds really good. Most comments are something like, " It doesn't sound like a V8, but I never heard a flathead six that sounded like that either"