so I recently purchased an Am Std. P-Bass with the full intention of modifying it into a PJ. Now, I've read all the posts( dr. Dimento..... etc) and I'm still not sure which way to go. Should I just buy the matching custom shop Jazz pup from Fender, or buy a matching set. I want to keep this passive and I'm definitely on a budget. Also I'd like to try using "stacked" knobs( is that right?) so I can control volume and tone on each pup.