Aside from sleeping an excessive amount today, I got my fuel pump hanger modofications wrapped up!
What's been done:
Braze new 3/8" return pipe onto hanger and bend to clear pumps
Drill out 2 feed outlet holes and mount -6 90degree bulkhead fittings.
Drill out 2 holes for pump voltage supply, I used 1/8 compression fittings hogged out to be less likely to cut the wires, O-rings inside to seal vapors.
Run 2 12awg voltage feeds to the pumps and soldered them together.
Run an 8awg ground cable outside the sender and double up the ground for the pumps with an extra12awg jumper. I'm trying to avoid grounding problems
What's left to do:
Run 8awg fuel pump supply circuit
Wire in second relay for 2nd fuel pump
Hog out the baffle's fuel feed hole in tank just a little (from 10mm to 14mm)
Install sender in tank
Make 4 fuel lines to jumper from tank to fuel filters
Make brackets to support both fuel filters
Install the whole shebang!
Pics!