external fuel pump ?'s

[Jonboy]

How many of you guys are running an external pump, and which one did you go with? I have been trying to plan out my swap, and it looks like an external pump would simplify a lot. My truck currently has dual tanks, and I really don't want to have to source all of the '87 only switching stuff, run wires, etc.

My '74 has the manual push/pull switching valve, but it is feed only. There is only a 3/8 and 1/4 lines on the current sending unit(s). I do have a pair of newer tanks with a 3/8 feed and 5/16 return I was thinking of using. Could the feed portion of the current valve be used, and run 1 new 5/16 return line to the left side tank, or do I need a return in both tanks? It looks like the external pump would run between the switching valve and engine, correct. I may be overthinking this, please tell me if this is the case. Any help would be appreciated. If my thoughts are completely off base, let me know that too.