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91-? 4.0 HO ECU interchange?

I wanna say 91-95 are interchangeable, but haven't looked at the wiring diagrams to see if anything changed during those years. For sure, you'll want one with the same tranny. I'll take a look. . .
 
So I wasn't able to compare a 91 to 95, but I was able to compare a 93 to 95. The only difference was that the 93 uses pin 37(red wire w/dark blue stripe)which is the "bypass relay", and the 95 does not.
 
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