Im looking for something for drag tires. Will 15's fit on the rear of our cars and if so where can i find 2 15" wheels. any certain car come with our lug pattern is 15"? would 16" stock v6 mustang wheels be just as good?
Yes they fit in the back just fine. The Bart racing wheels work well for a "cheap" drag rim. You can usually pick them up for about 60 bucks or less a rim.
Now on the front with GT brakes you can either use a 7/16 spacer or grind down part of the caliper to clear a 15" wheel.