318 Stuff + Blower
Hey:
Don't know about the crankshaft. If you've got a dial caliper, you could probably get a decent reading off of the journals to see if its been resized. Are you sure its forged?
There should be a casting number someplace on the intake manifold. The number I'm looking for is 3698437. Sometimes its hard to see because they're grubby or painted on.