ahhh so its the size of the shaft (or hole of the clutch from one side to the other.....)

so if i put the cossie plate on the xr3i shaft, there will be 0.6 gap...........

makes sense now.....

thats the thing, ap dont make a plate for this gearbox.Thats what burton power told me.

so its a case of getting a cossie centreplate made but with a spline diameter of 25.4.......

this is correct isnt it?