has anyone used an 87-88 crank in a 84-86 engine? will the later/stronger crankshaft accept the pulley/mount needed for v belts.

You're speaking of the Duke engine, I suppose due to the reference of the different belts? I ask the question, not because I know the answer, but to help someone else who might know.

yes, this is in reference to the duke engine. i sometimes forget about the number of engines used