It's rough, (and on the other side of Earth) but I've had this recurring ka-razy idea for a while if I got ahold of one of these, to stand-mount it like an EUB.
Alembic Japan 1980s AJ-II-JB FL
https://reverb.com/item/99187271
Doesn't matter, too far away, and outside what I want to put into an experiment. Wish one would turn up closer to here.
One of them popped up about a year ago with a bass dealer that lists stuff on reverb. I was tempted, but didn't pull the trigger.