I was given a brake set-up off a 97runner with 17's, they would not work with my alloy 15's. I traded them for a set off a 02 Tacoma do not know the wheel size but they work great. There was about .50 to .75 difference in height between the runner caliper and the Taco caliper.

IMO it is a very worthwhile mod, if nothing else the ease it is to service the knuckle if you break a Birfield on the trail. No more wheel bearings in the dirt.