hmm; allparts has the nice bourns 500k push-pull audio
, but the less-nice (but still OK) alpha linear
what's the plan for the push-pulls? if you're just gonna switch the pickups to individually parallel, i wouldn't bother; you lose power and lows, but don't really gain much of anything in trade (just like switching a stock P-bass to parallel is usually disappointing).
parallel would come in handy if you were gonna wire the pair in series with each other
, to keep things from getting too dark and boomy.