It's all good. If you want to, you can use it, but you have to do Mods 1, 2 & 3, and find a way to run the Electronic Spark Timing computer.
A brass shim can be added to fit the later distributor in the earlier block hole. You then modify the locking nut clasp, and use the right intake manifold and alloy head to clear the different distributor.
Ford changed everthing often, but the 1985s with Leaded fuel and that distributor with long reach plugs and high swirl head...they were the best performers. So have a think about what you want to do.