Help with stock EFI

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.
Lots of people have used the 5.2 and are happy with it in an A body. They run pretty hard and are great little engines. Do a search here.
Basically what I am advising is find a complete 2wd truck, regardless of if it’s obd1 or obd2 and use everything from it. It will make the swap simple require very little to make it run in an a body. When swapping transmissions, flashing ecu’s, de pinning and changing sensors all between obd1 and 2 it will require time and lots of reading in factory service manuals to get it all correct. You’re on a timeline so my advice is to push the easy button.