Damn Grn, never heard of that before, I've never done the rear brakes on a 240 before.
By the way Per151, I did a five lug conv on my S14 and I have the I think right side caliper sitting somewhere in my shelves, that and tons of other OEM stuff like seat belts, rear seats, whole wiring harness and ECU, etc. All these I pulled out cuz I can't use them with my project so might put them on e-bay soon.