I'm a big fan of the passive GZR pick ups too. It's a nice, easy upgrade for a cheap P bass, in part because the GZR pick up set comes with good quality pots and output jack, and the complete (solder less) wiring harness. Not expensive, and super easy to install.As far as P pu's go, the EMG Geezer Butler (passive) as well as the Fender PV64 are both very good.

