Well I m here to speak to the FI or EFI in a SPF.
it is easy if you let it be easy. -- use ford stuff. I used a modified ford system on my build, and piped in a return line to my tank.
-- I did not baffle my tank so below say 1/3 of a tank if I am hard into the twisty bits, i can partitally starve the fuel pump and incur a brief benzene cavitation.
The short solution is to keep fuel in the car.
The Ford plenum can be quite nice and with a 5.0L form factor it clears the hood easily.
I have not an SPF with a 351W EFI solution. (yet) Ford Racing has a harness, and there is sooo much support for the 5.0L systems!
As for the Silver Sulfate - I have under-car exhaust.
Steve