I am eyeballing a future project involving a 4bbl L31 intake and a Holley Terminator 4bbl kit with transmission control, and even adding in the Holley ignition parts if I don't feel like integrating the Vortec distributor. That should take care of the engine and the transmission control. What I don't know is what I'd lose if I pulled the existing ECM out of the truck in terms of body control etc. I assume not much, but hoping that the more familiar parties here could shed some light on what I'm overlooking before I start acquiring parts.
I'm in no hurry, the motor is relatively freshly rebuilt, sat at my parents place after we rebuilt and swapped in a 5.7 from a '97 burban and was only used for truck stuff for the last 6 or so years. I've recently re-acquired it and will be using it as my daily. I can hear it now, "It works, don't fix it!". I can't leave well enough alone. Plus, I have experience with Holley EFI and would like to fiddle with my own project for once. Maybe someone with a lot more sense will talk me out of it.
I'm in no hurry, the motor is relatively freshly rebuilt, sat at my parents place after we rebuilt and swapped in a 5.7 from a '97 burban and was only used for truck stuff for the last 6 or so years. I've recently re-acquired it and will be using it as my daily. I can hear it now, "It works, don't fix it!". I can't leave well enough alone. Plus, I have experience with Holley EFI and would like to fiddle with my own project for once. Maybe someone with a lot more sense will talk me out of it.