by Bob Gagnon on Fri Jul 16, 2004 9:57 pm
Martin-
You might be on to something, the piston diameters are the same for the for the 4 piston 944 Turbo and the 964 and the caliper may bolt on, although it has a 951 series part number.
The 964 does use the same 4 piston rear caliper as 92-94 928's, it is actually part number 928.352.421 (&422).02, so you may want to look at 928's as well.
BTW The drilled rear disc on the 964 RS is the same as the 944 Turbo Cup and 968 with M030 suspension, part # 951.352.041.91.
Cheers, BG