NOS Girling 16-4 calipers. THE prototype rear racing caliper of the late 60s through the mid-70s; including, from GT40s, Ford MK4, Lola and of course the JW Porsche 917s. Group 4 Pantera too. (All of these used 18-4 calipers in the front)

Come with brake pads. Seem to match up pretty close to an early 930 rear caliper. $2k shipped anywhere in America. I'm willing to ship to Europe but you gotta pay for it. Best to email me at gene at pos dot org
Girling 16-4 caliper.jpg