318 Stuff + Blower

Make me an offer on the P/S pump, I'll check on the crank (any ideas on what to look for, pistons are labeled,are cranks??????) As far as the manifold goes, It came off of a 1974 dodge motor home and has the original 2bbl carb on it. I JUST went and looked at it and all I found was an arrow pointing to the distributer direction and the firing order cast on it. Is there something specific I should be looking for? I saw a couple of random looking solo letters and numbers on it???