Resonator Only, or with Muffler Too??

I have an original 273 convertible car 1966 valiant.....I know it will never be a performance car nor will I try to make it that way......but I do want to purr down the road real nice.....may take my old motor to an engine shop this fall and have them put in a cam as they work the motor....any cam suggestions ?... think I will go to autozone after and buy 5 mufflers and just stick one on the pip at a time for notes and maybe combine with some resonator tips they sell to get the sound I want....