Hi again! A while back I was asking for advice on getting a "better" bass than what I had, and I asked about brands with wide nuts. Well, after long deliberation, I ended up spending the $50 to get the unspecified mid-to-late-90's Yamaha RBX-something back from the guy I sold it to, since I already knew I loved how it played. Anyway, now I have it in my head to hot rod the bastard. It's got a PJ pickup configuration, and a really small control cavity on the back. My idea right now is the stick Bartolinis in there and some sort of active electronics, and replace the bridge with something more solid than your average stock el cheapo. But I'm not sure about which active preamp would fit in the tiny control cavity. And I'm not sure which bridge I'd be able to lazily use the same screw holes for (five of 'em) and still have something solid (Leo Quan Badass II?). And I'm somewhat open to using a different brand of pickups, even though I have a Bartolini fetish. Mostly what I'm puzzled about is the bridge (which would most likely be a "Fender replacement" type) and if there's an active preamp that fits in a little cavity. Any suggestions?