If you ever sell the Cavalli-bass....
I know of another early 4-digit Standard bass that's available from the same fellow from whom I bought my B8S. Similar finish (flametop, burst, binding), but P/J (looks like barts) and 2+2 headstock akin to the Sunburst/Special guitars. Back is pretty worn, but his price reflected that.
I tried to get a different Standard recently (black, bound, dual HB, short scale, w/shrimp fork 2+2 head), but it didn't work out with that seller. It was a cool bass, though, and might be good inspiration for a custom build someday w/Shishkov. (no idea if I could afford that, however, and so it might remain a pipe dream).
For now, I'm mighty happy with the Bs! Fantastic basses. Wish I would have gone after these years ago. Better late than never!