[Jim Brierley]

Those parts you already have, the parts most often replaced are pistons, rings, valves and such, they are the same as Model A.

Originally Posted by DavidG

When you look carefully, most engine parts are not the same (unless you count fasteners), starting with the blocks, valve chamber covers, cylinder heads, water pumps, crankshafts, connecting rods, oil pump, camshaft, tappets, timing gear cover, oil pan, flywheel housing, and distributor.