I was looking around and cant seem to find anything about wiring up a 4.3 instead of my tired 2.8? I know about the trans difference as well as the need for a new drive shaft, this isn't the first custom I have been into. My big question is "Is there anything out there to help with this swap".
My major concern is the wiring differences. Other then custom orders is there anything I can do with running a whole new wiring set-up? HELP

 

I'd try the harness and computer from the S/10 or Sonoma you got it out of, then I'd ake any necessary adjustments you need to make by running those wires to switches. I was thinking about doing this in my old 96. That's what I was told.