T.T.I's vs. ........you be the judge

Awesome read. I have decided to go with their new early A Body headers from TTI for my 64 Dart.

Question I am stuffing a 416 stroker 340 in the Dart. What size exhaust pipes and what is the deepest best sounding muffler to use? I know it is an opinion thing, but I really like a deep sounding strong sound, not a raspy tin sounding exhaust. A little on the load side is OK too!

So what is the best performance / sounding muffler out there and what size 2.5" or 3" ?