I just received an email from Luke about this, and unfortunately he just let me know that they don't have any 86-93 mustang styles. They have all the other mustang styles though.
That sucks, because I have an '89 coupe that I was looking forward to getting a template for.
He did say that he has an '84 notchback - now, depending on the body style of the mustang you're working with (notch vs. coupe), this one might work. The main difference in the later body styles was the front clip and rear valence. Little differences like turning the rear triangular windows into solid glass units, the headlights being single piece designs, Ford added decorative kick guards below the doors, and the taillights being converted to wider single piece units are pretty much all the main exterior differences in the models. However, the '84 should be a pretty good starting point. You can eye-ball the car and determine what else would need to be changed.
You can see the body style differences here between the '84 and an '88.