What MUFFLERS for a 273 ???

I'm gettin' ready to have the new Manifold-Back duals installed on the 67 Cuda with a 273.......I'm planning 2-1/4" all the way back, and want to know from your experience, WHAT MUFFLERS you guys would recommend for a mellow muscle-tone...not too loud...Gonna use a-Body tips out the back (full tailpipes).............

MELLOW guys.......I want a nice semi-quiet tone inside the car, with a nice "rrrrrrrrip" out the back when I punch the gas.............

What say ye ?? :dontknow: