Help with stock EFI

TT5.9mag said

Not if you’re using an obd2 ecu. If I was doing it and I had to have a 46rh then I would use an obd1 ecu and harness. It will be easier than changing sensors and modifying an obd2 set up to run with the 46rh.

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Ok, so the truck I’m taking the transmission out of is a 93 2wd. Are you saying I would be better off using the existing and harness out of it since I’m using the 46rh transmission? If I do that, will the harness hook up to all the sensors on my 1999 360? Other thing I need to find out is what engine is in the 93. It might be a 318 which I’m guessing wouldn’t work.