I've built two Warmoth basses and now I want to build an 8-string (octave). I love John Entwistle and so I want a Buzzard body shape. Warmoth makes a good 8-string neck although I would rather have the Buzzard headstock shape too. Just want the body cut, sanded, routed, and finished in black gloss. Does anyone know of a source to have something like this made?
Absolutely. Warmoth sells "paddle-head" (uncut headstock) necks. Get a five-string neck from them, paddle-head, then shape the headstock yourself. You'll also have to cut an 8-string nut for it.
Sorry! Pretty sure you'll have to go custom there, unless you feel like making it yourself. Making a body for a bolt-on isn't that hard. I've done a few now, and I have the woodworking skills of a third grader.