B210Sleeper - is that your car in the your avatar? If so I forgot that the US sold the B310 as a 210 much like the A10 as a 510 (why does the US do this when the rest of the world does not anyone......) so I should have said I have B210 aka 120Y.

Anyway I had a very quick look in the dark (no measurement) and I believe you could install the whole backing plate and drums from a 240/260/280z onto the rear axle/diff housing with a little work.