Need parts for 1920's maxwell engine

I am looking for a crankshaft pully for a 1920's maxwell engine. The engine also needs a oil fill cap, and the pot metal piece that the distributor mounts to is cracked and needs to be replaced. The engine serial number is C519299

Dad has an old Willys Knight radiator that he wants to use but the lower water outlet is on the wrong side. Eventually it would be nice to find a correct radiator as well.

Any help is appriciated

Mike in CA