Update:
Installed a new offset 16T front sprocket and a Driven racing 42T rear on a 530 chain. I'm hoping this will provide enough low end-grunt but I'm starting to think I should've gone much higher. The stock CB was *18-38 with a 630 chain. (*It's actually 15T, Doh!)
New subframe and rear hoop welded on. Ducati 900SS Rear shock installed installed.
Originally I had wanted the shock mounted to the top of the swingarm brace like older non-linkage bikes (like the 900ss). However, without a way to test, and unwilling to compromise a testicle, we decided to mount it below where the aluminum is stronger. A bit of extra bracing was added here just in case.
Shot of the new rear
The upper mounting point is just under the tank and in-front of the seat. As the original shock was a non-linkage setup we were able to mount directly to the frame.
I had ordered a set of Tarozzi rearsets which were supposed to be direct bolt on. Unfortunately either I got the wrong kit or they don't make kits for the Limited models (This would be my assumption). Either way, next up is a custom mount for the rearsets. Also a bit of bracing will be installed into the frame to compensate for the modern rubber.