@66Valiant528, I have some wicked ported J heads on my 340. Was gonna sell em at Don's 16 years ago.. my Friend and Fellow Mopar Man, Tommy Looked at em, and said " Man you Need to Keep These, they are probably better than x heads. I have some BB (forget cast #, they flow like a 906, but have hardened Exh seats) heads off a built 413 we shoved in a Dart. I ain't coming off them... at least not cheap! Sure, I can get lighter heads, but then I gotta have em prostate checked! They came off running motors. They don't make em anymore. I'll run mine. Besides, my *** is getting killed thanks to obedient Joe! To me, its A Blessing, to have those oversized valved, professionally hogged-out Factory Heads....
