vibesup the only way I tell a 55 and 56 apart is if they still have the hood emblem.55 is like a 54 and in 56 they flip if over and the long line hugs the bottom of the hood.Bet you are the same way by saying 55 or 56?
I've seen Hemis in a lot of non Mopar. We have a 1948-50 Ford 1/2 ton in our yard with a 361 in it. It even has the push button transmission control bolted under the dash.