From what I remember reading, stock, they are all too long for all of our cars. The pinions are off centered with 1 long and 1 short axel. You need a second donor differential/car for an additional short axle housing and axle, which will center the pinion and make it the correct width for our cars. Like I said, this is what I've read, not from experience.
If that's the case then it's not really feasible to put in my car. I have a brand new 9" I was going to put in my '61 Unibody. I can have the rear centered and new axles for a few hundred.
You could still use it the pinion offset is not a real issue your stock rear is 57" wide the Explorer is 59 1/2" wide if you change to wheels with a positive offset it should fit we have run across guys in other forums that claimed to have done it.