I have a Mexican made standard P-bass, I like the feel but not the sound. What I'm looking for a a slit p bass pick up and set of pots that will give me more of a jazz bass sound. Any ideas?
I added a SD Stacked humbucker Jazz pick up to mine and it does what you ask. I wired is with separate volume/tone stacked pots so it retains the same 2 pots holing pickguard.
Depending on how much you feel a need to keep it "stock"...
Take a router to it and add a Jazz bridge pickup (or have someone better with a router than you do that if you are not so good with a router.) Same feel, new sound options.