They rotors are 288x25mm. The calipers have 58mm (if I remember correctly) pistons. If you have rear drums or a regular bugpack/empi/cb rear disk kit, then I'd recommend a 944 MC. The stepped MC will keep the pedal nice and tall. T3 rear brakes would also keep the balance slightly biased to the front (which is safer on lockup).
Glad you got the parts (finally
)
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