I recently found a site by a guy who's into 330s (can't remember where now I'm afraid). They are really cool guitars. Kind of the forgotten Gibson, eh? They're pretty similar to an Epiphone Casino, I guess? That big hollowbody, P90 squonk is really the business.
You have great taste in guitars. Love the Yamaha bass. A buddy and I that used to play in a surf band have had a long-time hankering for the guitar version - Yamaha SGV.