I will search around too. I will go hrough this in the next few months on my '72. All I need to figure out, is the gauges. Everything else will be stand alone from the ECM and the harness.
does yours use same style as 73-87?
if so you can use the electric gauges out of a 87-91 burban and run the wires from ecm to them or thats what someone on here said before