You already have the harness and ECM, so you're looking for someone to modify your existing harness to interface with your truck. I can't vouch for this guy in any way, as it was just a quick keyboard search, but he advertises doing that - Programming Services I know there are others out there, cause the guys with Jeeps are dropping modern EFI units into off-road only vehicles, and sending the ECM/harness off to get it "reduced" to eliminate un-needed features.