I need some help and advice

[dave w]

We have one that goes over the basics!
http://www.gearhead-efi.com/gm-ecm-p...onversion.html

Your going to have to learn these sensors and follow the wiring, there's more diagrams here:
http://www.gearhead-efi.com/Fuel-Inj...Information-42

It is literally hundreds of decisions you need to handle one by one.

And here's one for an idea what to do with the harness:
http://www.gearhead-efi.com/Fuel-Inj...Engine!-HOW-TO!

Here is another one:
http://www.gearhead-efi.com/gm-ecm-p...on-wiring.html

dave w