For some time now I've been toying with the idea of putting a mudbucker in a jazz bass. Yes, I am in my right mind. Some of this is because of Mel Shacher, yeah, but a guy I used to know had one and it worked pretty well and he used it for everything from reggae to punk. I have a cheap but decent Jazz body and scarfed an Artec EBO-style pickup off Ebay last year, and I would put a Pbass neck on. Main concerns are: 1) where to set the pickup? There seem to be two general locations-- up by the end of the neck, like Billy Sheehan, Jeff Ament, and Dough Rauch, and replacing the neck J-pickup, like Shacher and Berry Oakley with the Hagstrom pickup in the Tractor bass. Either one is going to have its good and bad points. 2) what other adjustments should I plan for? E.g. how much should I worry about string spacing over the pole pieces? I'm not picky about string spacing, so if I get a Schaller roller bridge I could probably fix a lot at the bridge end, but the neck end might be trickier. 3) What do you think about making the mudbucker work with a jazz pickup? The jazz is probably going to be overwhelmed, signal-wise, but are there any snags I should look out for with the different impedance ratings and so on? Should I keep the standard v/v/t controls or go for something else? I know there's a couple of people on TB who have done this, so I'm curious to see what you think.