Thats a very time consuming swap. The easiest way is to ditch PATS and use stinger xs or ms3 based standalone to run the car. Not sure what accessories will fit. Probably will have to ditch ac.
You'll need everything from the donor and almost everything out if you pockets.
Are they auto or stick cars ?
What year is the fox ?
It would be easier to take the rear and front spindles and
control arms....and use maximum motorsports k memeber. Then swap in wiring harness compatible with your year fox....and add 302 or 351 of your choice with suitable trans.
The 96 gt wasn't the best year...although the 2v 4.6 does like boost.
The good swap option would be a 94 or 95 v8. The trans and bellhousings have differences that move the shifter back some.
Swapping a 96 into a fox is doable...but not the easiest or cheapest route. The 4.6 is a wide engine....and not that much power na.