When i purchased my 632 a few months back, we drove back 1.5 hrs home and it wouldn't run long enough to get it off the trailer. Turned out the previous owner didn't have a Flippin fuel filter on it. Look at the Pic of how much crap came out of the fuel pump.
I took it up to AutoZone, with the only knowledge that it was a 1.6L Ford out of a 71/72 Pinto, 71 Capri or a 79 Fiesta.
I don't remember the year, I think it was a 74 Pinto. But we found one that looked exactly the same. I ended up not using it as I got my pump and the carb cleaned out, I ran a filter between the pump and carb. If you really need it, I can go back up there and see if they can tell me the p/n we ordered.