newguy
Grey Hound
Why not fit the R1200C swingarm...
https://www.sidecarjohn.co.uk/converting_the_k.html
If you can fit it to a K, you should be able to vir it to a R.
https://www.sidecarjohn.co.uk/converting_the_k.html
If you can fit it to a K, you should be able to vir it to a R.