NEITHER OF THESE TWO PULLEYS HAVE MFI MARKS SO THEY ARE NOT FOR A 911 RSR. I NEED TO CORRECT THIS.

The 911 RSR Crankshaft Racing Pulley has the same 116mm O.D. as the earlier 906 part. The differences is that the 906 pulley is for a 'Non-MFI' motor and the 911 RSR pulleys are and those have not only the 28 degree maximum advance timing, but also the MFI timing marks.