Has anyone done any investigation on using the R1200 input or drive shaft into a 2001 to 2004 R1150 GS transmission,
it appears that the splined portion has a longer set of splines this would then go into the disc to engage all of the splines,
and then possibly using some of the shaft components they could be swapped,
also using the R1200 clutch disc instead of the 1150 unit
This is the parts picture for the R1200
http://www.realoem.com/bmw/diagrams/w/e/217.png
This is the parts picture for the R 1150
http://www.realoem.com/bmw/diagrams/n/c/17.png
After looking it appears the shafts have the same diameters though the newer trans has bigger bearings the inner dimentions are the same