If by chance anyone else is interested in a pair of 914-6 GT rear calipers, I also have an extra pair which I am willing to sell, see link below...
http://www.pbase.com/9146gt/9146_gt_rear_steel_calipers_new_set&page=2
PS: "dfink", is not my intention to 'hijack' your thread but since you sold your GT rear calipers, I simply wanted to let others know I have a similar set. "dfink", do you have any other 914-6 GT parts for sale?
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1970 Porsche 914/6 GT > Recreation in progress...
http://www.pbase.com/9146gt/my9146gt
1970 Porsche 914/6 > Crashed, driving while sleeping (not good!)
1974 Porsche 911 Carrera > Stolen, recovered in pieces