Rothstein Guitars has been making a 5 position for a while. I have had a JX5 for over a year. It is a complete Jbass setup. He also has them for a precision and I believe will do custom work.
http://www.guitar-mod.com/rg_pw_bass1_passive.html
Damn decent page there, with a decent list of knob options.
Say... How would you wire an out-of-phase pair of pickups? I assume it's parallel-only, and one pup's lead and the other's ground would be connected to the output lead, and vice-versa for the output ground?
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