Fuel pump should drip I believe, pretty sure it will siphon the tank if you let it. The crank can and will turn by the fan if the engine is worn out and has low compression. You may have a situation where the balancer has come apart and only the outer ring is turning, in that case all you need is a new balancer.
For a remanufactured engine, a 230-250 would be a drop in swap, a 292 would also fit with different frame mounts. I doubt the transmission needs much, the 230 didn't have a lot of power, maybe a clutch, but that would be about it. Shop local for the engine, shipping will be high other wise. Shop around for the engines, some places just use total junk when the rebuild them, ask what brand of parts are being used.
