So just how good was the A-Body back in its day?

I have 2 valiants, one a 68 4 door, and a 69 2 door, and although theres something about the 2 door i cant shake, the 4 door sure shocks people that think it wont be able to get out of its own way. to me the valiants would make great sleepers, and in my opinion, i think you can get more out of an A body with minor changes then the bigger mopars. anything you can do to a bigger mopar, you can do to an A body...well at least with a shoe spoon...lol