I had a top half of a CA160 and a complete CA95 chain guard in the shop. What I noticed is the top half of the CA160 chain guard was a little different on the sprocket end then the bottom half of the CA95 guard.
Below is my answer that works. Install a late model CA95 swing arm on my CA160. The chain guard form the CA95 matches perfect.
Also for anyone following this build, The bike I started with was way gone. I decided to build the bike on the bench first, less rims. Then make the body repairs,wiring mods and any custom work...even Buco Saddlebag mount & wire. I will then breakdown the bike for paint and chrome then reassemble.