i *know* that the ma61 vs ra60 rears are different p/n's in the gabriel catalogue. i guess ths transfers to ra60 to ra65 also.
this, however, doesnt mean they dont fit
as i recall, practically ANY O - type will fit. including old holden and ford rear shocks. and if youre not using a stroke sensitive valving type of shock, the shocks installed height etc shouldnt effect its performace at all. obviously different cars will have different stock damping co-eff's, but this cn be a good thing if you want to play with things a bit