I have a fender american p bass and I was just wondering if it would be easy to add a jazz pickup or even a humbucker to the bridge so I can get a bit more snap and growl for my metal tone ? If this can be done then would it be easy to make the added pickup an active one seeing as how the bass itself is currently passive ? and also could another dial be added on for the seperate pickup so that it could be turned off when not required ? How expensive would somethin like this be to have done ? Sorry if these questions are dumb, I just figure that having an american P-bass I'd like to expand its range further without getting another bass.