I have Ritters cast iron block, I had everything checked just to make sure, cam, crank, deck and final bore just like any block then depending on heads you'll have to drill the cooling passages into the deck, hopefully its been done now the the rear oil feed for the cam needs drilled, again might be done now since he switched shops that does the machining, holes will need to be drilled into the cam in closed tunnel, I did this and still needed a vacuum pump, I drilled 1/2" holes into each section. Its a list but well worth it. Mines a 428 cid.