’75 R90/6 engine, ’74 trans, 32/10 ratio (3.20) then July 2020 37/11 (3.36, for sidecar) rear drive, custom driveshaft, /5 headlight bucket, Heinrich tank, Wixom fairing & bags.
I have added dual discs the same size as a GSXR 750/1000 fitted to /6 front hubs custom cut down to allow for fitment of wire wheels, aluminum wheels, R90S engine emblems (not pictured), R80G/S oil pan & bash plate (just for fun), brake m/c from ’88 RS/RT, air horn, sidecar springs and new dampers.
Once I figure out how to resize the pictures I have of my conversion I will post them

This site says my pictures are too large.