Both are Girlock calipers * GM VL Turbo (six-cylinder) fits 20 x 290mm rotor VENTED * Datsun A10 Australia-assembled Stanza fits 12 x 245mm rotor NON-VENTED
20 x 290mm rotor * VL V8, 6-cylinder Turbo
20 x 270mm rotor * VL 6-cylinder non-turbo * Uses a caliper that looks like the A10 caliper (non-finned) but is made for thick 20mm vented rotor * Caliper uses same pads as VL Turbo, same piston. Difference is the fins and the shorter mounting lugs to match the small rotor