I thought I might share one of my favourite custom build, Hageman MC XJ900R :
So yeah, ok, that's not exactly an XJ600, just a few more cm3 but that's the spirit I'll be looking for when I'll be modifying my soon to come bike.
The work is different, Hageman did a really nice job replacing the original tires with these ones. Otherwise pretty standard but clean work.
Share yours !