Kz650 rear wheel spacer

I'm seeing on kaw website it should be 39mm p/n92027-1174.

I guess i have a mixture of wrong parts haha. So i need the chain adjuster, and 39mm spacer so far.
Do i need the later rectangular caliper? My hub my be from an SR not sure if they are the same part number, all the disc should be the same right?

If you are using some parts from a a "D" and some from a "C" you are doing a bit of mix & match. The "D" (SR) and "C" (Custom) models use different part numbers, so finding the right combination may be a matter of trial and error or custom made bits. Ed

I am going to try to replace everything with the c parts
So far i ordered the 39mm spacer and new chain adjuster. Thinking about ordering the newer rectangular brake

Any news on your wheel fitment?