BMW E30 brake rotors can be fitted to the 1200 hub.
Overview
The rotor height is only 1/2 mm taller. Machining of the bolt holes is required, as is a custom fabricated caliper bracket.
Specification
BMW 1983-1991 316/318/320/323/324/325 E30 1983-1994 Z1 1988-1991 2.5 diameter: 260mm thickness: 22 mm vented height: 35.1 mm centering hole: 66 mm bolt center: 100 mm circle, 14.65mm holes
Datsun 40206-U6700 rotor diameter: 245mm thickness: 10 mm height: 35.6 mm centering hole: 73 mm bolt center: 95 mm circle, 10.7mm holes