RM125 clutch plates,what fit's what?

[D project]

Need to put a new clutch in a RM125 84. What plates from what years suit or is it only the number of plates in the basket that changed.
Early RM80 are the same size. Did they change the thickness and outside diameter of the plates to suit different models.
Would ones from a later model interchange?

[lukeb1961]

the E through to M (84-91) shared the same clutch plates. (p/n 21441-22A01)
common with the GS300L's and about a zillion LT quad bikes of the 90's.
if you are certain the early RM80 is the same, then that makes it the same as another zillion earlier RM's, TS's, TC's, DS, DR, RV's..