There was a Challenger from Texas that used to run in one of the NMCA classes in the 90's. Iron oem heads were required. I met the guy that ported the heads on that car. He claimed with a ported head he liked the 516 better as there was more meat to shape the ports to his liking. The Challenger ran at the top of its class. Had a wierd looking hood scoop on it. I will try to find some information.
Getting old just means you were smarter than some and luckier than others.
