From what I've read and some of the old timers have said many felt the bottom end of the 354s were a bit stronger and wound a bit quicker due in large part to lighter rotating assembly and and shorter strike......but there is no replacement for dispacement.

Tech and moon are both on the money about he "feeling" of owning a 392 life's to short to put a car together and sit there and say "I wish I had....." every time you drive it.