My 73 convertible is a 6 cylinder. I've owned it since 1974. I considered upgrading to a V8 over the years, but am happy with the 6 cylinder. It's easy to work on and still cruises at 70 MPH very easily. It's interesting that it had many options except the engine. Décor' group, sport mirrors, full console, AM/FM stereo, etc. If I feel the need for speed I have a 2004 Mach !.