You can but it will have to be modified. You'll have to sacrifice your stock 60mm TB to get the steel line that has a hose going to the oil fill neck and you'll have to cut off the throttle cable plate and mount it on the 65mm TB throttle shaft. You'll also probably have to grind down the TPS tab as mine was too long to work with the Mustang TPS - which also needed it's mounting holes drilled out some to mount in the slightly wider 65mm mounting holes.
The Explorer manifold isn't drilled for the ACT sensor. You will have to extend the ACT harness to relocate the ACT sensor to the air filter box. Use the TPS and IAB from your old throttle body. On the '96 manifold I had, all the EGR passages were there and fit OK. Use you old fuel rails and regulator. You will probably need a new EGR spacer adapter and gaskets. Without the EGR spacer, there is no place to mount the throttle linkage support bracket. The stock Explorer linkage didn't come anywhere near fitting, so I made an adapter plate for the throttle linkage so I could use the 65 MM throttle body.
I made a circular adapter plate out of 1/4" thick aluminum to make it fit. After bolting the aluminum plate to the existing linkage, I mounted the arm with the ball stud off the old throttle body on the adapter plate. It works great and looks neat. You will need an aircraft type countersink for one of the bolts that secures the plate to the explorer linkage arm. It ends up being under the arm with the ball stud for the linkage.
A trip to the welding shop with the explorer TB and the arm from your old Mustang TB would probably accomplish the same thing. I didn't have access to a welder, so I fabb'ed the plate in my shop. I took about 1.5 hours to do it, it was a measure, cut, and fit type of operation.