It's an oddball combo for sure. Pistons were custom made in 1972. They are. 927 pin,. 200 dome,. 043. 043 3/16 inboard locks with a tiny skirt. Head intake ports are matched to the. 060" intake gaskets that used to come with a belly pan. I had a collection of them so it seemed like a good fit. Exhaust ports were raised in a D port design and I made custom header flanges to fit. CH of the piston is 1.195 from memory and crank is 3.365" and still Chrysler diameter. There were no rockers for these stupid heads so I used crane golds with Jesel Buick adjusters and Chevrolet push rods. I shift this between 7500 and 8000, the converter is an 8" I made that goes about 6400 on the hit. Intake is a Victor with a 2" velocity spacer and an old carb shop 930 with an air cleaner and the car has header mufflers.