You'll have real fun installing an automotive version of that engine into a forklift, anything is possible- the question is how much money do you want to spend in the hunt for trying to save money? Bellhousing bolts may not line up, crankshaft bolts may not line up, crankshaft pulley may have to be machined to fit, special motor mounts may need to be made,etc- but hey- at least you saved on the initial cost of the engine