The caps were drug to Atlanta all the way from Australia...
The guy said he picked them up with some vintage FORD parts in the 1980's... they are beautiful compared to the foreign repros, they have only been hit once or twice on putting them on and there is not a mark on the taper at all.
There likely was no one in the place who would have known what the pyroceram insulators were, HONESTLY if not for this forum I wouldn't have known. After talking to him I asked about the other caliper, he traded in on a rebuilt set, he had misplaced this caliper which is why is didn't get sent in.. although he said he still had the 4.11 rear out of the car... caliper to caliper.