Ok so I have a 91 explorer w/3.73ls, which Im pulling out to put in my 87 ranger. I have a 5/94 parts explorer that has 3.27 opens. but today I discovered that the 94s have abs and what appears to be speed sensors. So my ??s is will the '94-3.27 go in the 91 w/out major mods. I was going to change the entire axles over, and get a little better mileage in the 91(wifes rig)