Let's see if I can remember all of this
You will need:
Automatic transmission crossmember
Driveshaft - For an AOD fox will work.
engine crossmember - For a 5.0 fox will work, just use 94-95 engine mounts
new exhaust - the MAC offroad h-pipe will fit
wiring from the fox
wiring and computer from the sn95, including the engine bay fuse box.
Now, I hope you like wiring, because you'll be learning to love it with this project. Since you're using a Stang as a donor, it will be a little easier for you than it was for me, using a 93 thunderbird donor. Get a chiltons for both years, and a lot of the 5.0 swap articles somewhat apply to this swap as well, when it comes to the chassis and fuel wiring.
If you want to use a carb intake, you'll also have to use carb heads, as the EFI heads have the injector bosses cast in to them, not in the intake manifold. But to me, that seems like a step in the wrong direction, unless, of course, you make one like supersixmotorsports . com did. Check out their website, they make a mean carb v6.
I went with a QA1 k-member rather than a stock 5.0 one, seems useless to go through the work of swapping in another stock one. I also went with a lot of other things you probably are not going to, so if you have any questions, let me know.