There was a dude that put a mustang 5.0 FI motor in an 87/88 SWB about 15-20 years back, so yes its possible. He ran it for a while then put it into storage and sorta disappeared so not a lot of info exists other than we know he did it and posted pics that have since gone away.

99 Gen 2.5, fixing blown head gasket
89 SWB- 33's, ARB Front locker, SR rear locker/axle, SR F brakes, winch, WST Offroad Armor all Around, 2.85 Aussie T-case Gears (SOLD)
Sold: (2) 95 SR's, 86 SWB, 90LWB, 91 LWB
-Can Change a timing belt in my sleep..