I've seen the occasional Dusty Hill picture where he's playing lefties set up as righties for years... most of the time he just does a reverse headstock, as what's seen on his recent Fender Custom Shop tribute model, but I've seen several pics of him playing actual lefty basses or even lefty basses built as a righty, like the picture you posted... here's another:
He also has that same exact bass, but in a true righty version.
It's hard ot find any info, but I think they're made by John Bolin... and I think he even makes all the "vintage" basses you see Dusty play as well, and his original first production year tele bass was retired.
