Dual exhaust

My '65 Barracuda S came stock with a 2 1/2" single exhaust. I plan to redo my exhaust and stick with the single exhaust (also because I have a cutout at the back for the resonator, and dual resonators is not an option due to the gas tank location). I will likely go as big as possible, like 3" or whatever, but keep it single.

Neil - 65s