As far as missing parts, I don't see many. The connection from the blower to the fire pot can just be some flex dryer hose with worm radiator hose clamps. If the blower turns OK without any rude noises, I would just lube it up and use it. Most of the hand crank blowers run in an oil bath like 80wt gear lube or chainsaw bar oil. Someone more familiar with the Canadian/Buffalo blowers will correct that if I'm wrong about the lube. You should be heating metal in short order with that good find.
PS the stock support can probably be straightened out cold on the anvil.