You mean the 73-80 KZ guys...right..??
I know .. thats possible Jon..
Lately some companies like Z1enterprises.. (theres a few others, but they're expe3nsive) have made 530 sprocketss for the Kaws ..
But, I doubt that will happen to the 530.. 530 has always been a popular chain in a bunch of industries...
630 was kind of a splash inn the pan in the 70s and 80s..

Build it the way you want it ..... then learn how to ride it like you own it..
www.lowridersbysummers.com