413 wedge

Photos. Some heavy motorhome engines are MUCH different. Completely different heads, intake, and exhaust. They had coolant instead of exhaust running through the intake for the head crossover, and part of the exhaust was wet,as well. Also those types had the water pump mountedl high on a big heavy casting, and connected to the heads instead of the block

Having said that, the block and crank, possibly the rods are useful, and some guys claim to have used the heads

Better be cheap!!!