[greaseburner]

D722 crankcase is taller than D600 crankcase because of longer stroke, therefore the gear case covers and water pumps are different. Engine side mount bolt holes have same footprint. Crankshafts are different, crankshaft pulleys and flywheels are the same. Connecting rods are the same length, large end is the same(use same rod bearing) but the wrist pin on a D 722 is larger diameter. Motor mount holes to centerline of crankshaft or the same. I have tons of experience on D600 and D722's, no experience on the gasoline models.