First off welcome to Ford-Truck Enthusiasts and the South Carolina Chapter!! Where in SC are you from?
A friend of mine recently did a similar swap, but I think his was a newer 3.0L (from a '95- '97 Ranger?! I think) and it went into '88(?) B2.
Irc, he had A/C clearance issues- but I'm unaware of anything else.
Also, If you haven't already- I can help you post or move this one to the B2 or Engine Swap forum.