you could but the track width is wider...and im not sure if it requires more work or not as far as balljoints and k-member...easiest is 94-95 spindles and 94-98 calipers and rotors...actually rotors should be the same from 94-04. 99-04 uses a slightly bigger caliper.
You can run 2004 GT/V6 10.8" rotors on 1995 spindles and the other way around. You could run 1997 brake rotors on 2004 V6 spindles with 1994 GT/V6 calipers.
Same for Cobra 13" rotors. You could run 1994 rotors on 2004 spindles with 1995 Cobra brakes.
You can use the 96-04 spindles on a fox, but there the geometry does change slightly and it's not ideal. 94-95 spindles are ideal, but there are plenty of guys running 1996+ spindles.
The 94-95 tend to be a little more expensive to purchase used.
you are the man, mustang 5L5, your help is greatly appreciated, Just need to find some 95 spindles, that is the hardest part, dosent seem like there is too many 95 mustangs wrecked around here now