They did a ton of those--most all were Mopar Perf cams usually .509--2.14-1.81 valves in everything--they had a very neat bowl hog that made those heads work extremley well without any additional hand porting--the fully ported 452's they used were works of art done by Mike Duke and if you have those Hang On to Them! The std setup with the bowl cut was a GREAT head--those engines tended to be zero deck style and had thin steel head gaskets and many were more like 10:1 CR so keep the best fuel you can get in there---Kenny was always a big fan of the Holley manifold mentioned -- it is the all time great as many know--those units just go to show that with enough compression for a .509 and some simple head work that a PLAIN 440 is a killer unit. It is one of the best combos still to this day but with the sorry alky gas we are forced to use they are on the hairy edge compression wise for a street unit. You have a great engine!