Surely Warwick would have a bass like your Rockbass, since they own the flamin' company.... just... don't use the neck pickup. Anyway, most likely you won't find one on eBay, no matter how long you wait. I highly doubt people buy Warwicks to tear down and sell for parts, because, frankly, why would you? Definitely gonna have to find a luthier and shell out the dough. Unfortunately, it won't have that W on the headstock.