20vt driveshaft identity help

Hiya

Just trying to sort out driveshafts before dropping the 20vt in for a first fit mock up. I have measured the inner cups and seem to have 104mm which is neither 108 or 100. Any ideas?

That's because you measure the d/shafts or the inside of the  inner cups,  a 100mm shaft would need a slightly wider inner cup to fit.  Incidentally the 108 cups measure approx. 112 if measured where you have.

Brilliant, so I can clean up what I have got and 100mm inner shafts should fit. About time luck went my way 👍👍. Thanks for your help