The 4.0L Explorer/Ranger/Aerostar V6 is based on the old German 2.8L V6 that was used in Capris, Couriers, Pintos, Bobcats, Bronco IIs, Mustang IIs, Rangers, and 1979 fox-body MUSTANGS!!!
If you can find a set of '79 fox-body Mustang motor mounts and a 2.8, 2.9, 3.0, or 4.0 bellhousing, you should be just about there, (other than grabbing computer and engine wiring harness from donor truck) but you're covering uncharted territory overall.
The better 4.0 to get would be a later 4.0L SOHC engine from a later Explorer, Ranger, or 2005+ MUSTANG! (that's right, the "new" V6 for the new Mustang is loosely based on the same V6 that first appeared in the 1974 Mustang II!) Be more pricey, but the power and torque are worlds better than the old OHV 4.0 (my sister had one of the OHV 4.0s in a '92 Explorer, even with a 3.55 trac-loc rear end the thing did 0-to-60 in 2-3 weeks!!!)
__________________ 1976 Ford Mustang II Ghia: 302 with a 600cfm Edelbrock carb, Edelbrock Performer 289 intake, Dynomax Blackjack headers, 2.5" exhaust with Flowmaster Super 44s. RJS 11-gallon fuel cell, C4 tranny, chrome 16" pony wheels, fuzzy dice, brown vinyl half-top, and painted in the tackiest color ever (harvest gold, that's why I call it "The Goldenrod").
Also have a 2003 Dodge Ram (lightly modded daily driver/tow rig/office/dining room/home away from home/workshop... I call it "The Big Blue Dawg".) | 
how do i do a 4.0l swap from a 93 explorer 
