Who sells fuel pumps?
Year One is the only vendor I'm aware of.

Are 440 fuel pumps all the same or does things like it being a California emissions car make a difference?

It's been a while since I looked at it but I'm thinking I remember a return vapor line from the engine bay going back to the fuel pump.

Thanks in advance!

Any local parts store will have it.

I wasn't sure if locals (Advance, Auto Zone, O'Reillys) would have the "right" one; especially if that vapor return line went to something unique on the fuel pump. But I'm thinking the vapor line might go into a tee in the fuel line - NOT the fuel pump (after looking at pics of fuel pumps for 74 dodge 440's).