Just brought home a CX500 and GL500 to combine into 1 nice (hopefully) cafe racer. I am going to use the CX500 monotube frame. Cut the back half off and go monoshock. I really like the backbone bracket from BBCR and Rejuve, but both are out of stock. And with the covid thing, not sure when they will regain production. Are there other alternatives that i am not finding? Doe anyone have deminsions so I could fabricate my own? How about center to center on the eyes for the coil over shock for this conversion? Any and all help would be appreciated.