I agree that kit looks way over the top, and he didn't play anything like such a monstrosity when he was with Dale Bozzio and Missing Persons.
I seem to recall though, that he had a fair old kit during the Zappa years
Just found the Imbuya Burl bass on Chris's website. I can't help staring at this bass. It's a dream
http://www.chrislarkinguitars.com/instruments-gallery/electric-bass-guitars/imbuya-5.html
Looking at the front row, far right, i think that used to be on his website, and looks like it has the Imbuya Burl body face.
What a stunning collection of Chris Larkin's impeccable builds
Likewise, i sent a bass to Wunjo ( they arranged via UPS ) - an '83 vintage Overwater - gulp ! - it arrived safely. Wunjo then sent bass back by ..gulp !... UPS
It arrived safely.
Bingo