Flowmasters too LOUDDDD..& Cuda Duals...

Hey guys....... I have a '72 Demon with a small block and full dual flowmasters dumping out the back.......3.55 Posi, so it winds a bit in 3rd gear.......when you're cruisin, it's just plain TOO LOUD.........What mufflers would I weld in to tone it down for real driving comfort, but still have a nice sounding (more like stock, but nice) Mopar?

AND.......... My '67 Cuda up in NY is in desperate need of a set of duals......I'd like to weld it up myself, but can't locate any "downpipes" that will work with the stock manifolds and donuts........Don't want headers...... want it with the manifolds............it's a survivor, and I just want it to breathe better and "sound off" nicely for it's later years of cruisin. Any help finding some downpipes?.....I can make some if I have to, BUT if they're out there, it would save a whole lot of time and monkeying..........1967 -273 with P/S and auto.........

Any help appreciated.