Ok first ill address Monte, finally zeroed in on where you coming from, the head. The head configuration is not what defines a mopar by itself,the distributor,timing chain boss that sticks out from the block,oil pump on external front,and skirted block DEFINES A MOPAR. AS far as heads up racing there is none in the DC. Va. MD. area that i know of, it was tried a couple times and the big guys thew cubic money at it and poof gone. I'm sure we will have to use the twisted head till someone builds a better head down the road.It wasn't so much Alderman i was watching but the wedge head and i knew they where doomed because they where limited on bore size(for big valves)WE both have opinions and that's what makes the world go around, have a good day.