You can't go wrong with a '73-'74. Personally, I prefer the '72's because they don't have the big bumper guards. If I owned a '73-'74, I'd at least change the front bumper around and maybe the rear as well.

The 1972 'Cuda has always been my favorite because of the round lights on the back. Making up for any horsepower loss over the '70/'71 versions is easy to fix...