wiring issues..

so I have a 1988 notch factory 4cyl car that i’m dropping a 94 5.0 ho into, or trying to. i would like to keep it fuel injected. i have a ton of harnesses ranging from engine to lights to injectors and not all of them have the ford ID tags on them so i don’t know what years some came from. i can make out a couple of them, i have two engine harnesses tagged F0ZB which is for a 1990 mustang. i also have what looks to be two 1989 computers, one an a9l and the other an a9p that came with the harnesses. i know the L version is for manual and P for auto. im planning to use the a9l because i’m putting a t5 in it. but my issue is since the computer is from 89 do i have to use a 1989 v8 harness to plug into it, or can i use the 90 harness i have already. also the two harnesses are different but both tagged f0zb. they are similar but have a couple different connections. i planned on reusing the headlight harness and just extending the alternator plug also. wiring has never been my strong suit but i am determined. could not find a thread that explained how to solve my issue so i apologize if this has been answered i just could not find it. any help is greatly appreciated.

okay my 90 harness doesn’t look like it has those two plug ins. i know it is a 90 because it still has the tag on it.

good news folks, among all of the harnesses i have i think i have scored a pretty good shape 89 harness. and this is one that has no ID tags on it however it has a MAF connector and no white airbag connectors. from what i have read this is the only year that’s like that and 88 and prior do not have the maf connector and 90 and newer have the airbag connectors. if this is the case will this plug and play with my stock 88 4cyl body harness as long as i extend the alt. wiring and plug and play with my a9l computer?