The only SCT product that will work on a 5.0 Mustang (89-95) is the SCT Eliminator chip. Nothing wrong with them. The Moates QH is a few steps above but does require more knowledge. I have the QH and BE/EA and it works quite well. It is probably the best option for tuning a Mustang up to '04 technically. Nothing else will do the live tuning in REAL TIME that it will do other than the twEECer but that is almost twice as much and the QH is better.
+1.... QH is #1. You have to know what your doing or it will be a nitemare for the average Joe if you know nothing about tuning.... Trust me... For what your doing i would get SCT if they offer free tuning so you do not have to rely on op tuning your ride. It will require more down time cause yoh have to send the chip out, back and forth untill you get the right tune for your set up. I personally would get another qh and rely on ^^^^^^^ no names mentioned.. LMAO