If you can wait til winter ill be doing my 5 lug swap and will start a thread on it. I've got a sn95 rear axle, front spindles, rotors, calipers, brake lines, booster and master cylinder. Still need a proportioning valve.
By all means its pretty simple but will require some down time with your stang to get everything swapped in.
---------- Post added at 07:29 PM ---------- Previous post was at 07:26 PM ----------
Cheap way is mark VII rotors which limit you on what wheels will fit with the center caps and 2 drivers side ford ranger axle shafts that are on a ranger with 9" rear brakes I believe that will let you keep the rear drums you have just need new 5 lug drums.
Also can't forget the cost of wheels and those extra lug nuts