CJ batten heads or aris or fuely heads or some one with a cnc center. bottom end based off a bbc bottom end some what.rods look like RR s be a 2.350 big end 1.094 pin end .and the cam in the back ground is a crane old core looks like 55mm core and in back gound there a ls engine block and a Dewalt drill looks to have a 3/4 socket on it