c110's and c210's are quite different and the same (depending on how you look at them)
c110's have different rear suspension and do not use the coil over shock absorber type suspension the spring and the coil are separate, other than styling and dimensions most of the other stuff has a large degree of interchangeability by the looks of it, though i am willing to bet that the rear suspension cradle is practically identical to the S130 280zx, Z31 300zx and HR31 passage (with IRS) so if you want a bigger diff and disk brakes and the ability to get an CLSD / VLSD center for your R200 long nose (on S2 S130's, Z31, HR31)
and if you want to talk to some people who have done RB conversions on C110's or S130's send me a pm on classic z cars (as im not on SAU much)