MSefi.com read only forum (Jan.15,2018)

88-95 gm pickups, small box on the intake manifold.

I thought this might be helpful for the holley tbi 85#/h injectors

http://go.delphi.com/CS/DPSS/CATALOG/Pr ... er=FJ10043

93 gmc sonoma 2.5L

I have used a few late 80's early 90's f150 external pumps with success, they are cheap and easy to find.
They are not that large an should be able to be hidden under the tank.
Have you converted to 12v? How are you planning to run the return line?
You could try a single injector tbi from a 93 gmc ...