I'm from eectuning.org and have done it to an A9L that controls the 400M motor in my '79 Bronco. The harness modification wasn't tough, but do your homework on the schematics. I used a '93 Lincoln as the donor for coil packs and EDIS8 module. You should be able to use the '97 Explorer cam sensor directly. This is an EXCELLENT upgrade to any engine.
'89 5.0L LX hatch: all 90mm 2.2L Blowzilla Dart Iron Eagle 306 @ 8.4:1, ported Vic Jr heads, TMoss ported GT40 lower, Deka 80# injectors, EDIS8, GUFB-A9L2-Moates tuned, Tremec 3550, 3.31 gears w/31-spline TruTrac
'66 GT 2+2 Fastback: carb'd 289, Canfield heads - EFI transformation pending
'71 Mach 1: totaled - R.I.P.