Maybe an unpopular idea, but...

I have a Schecter Elite IV Stiletto, which came with EMG HZ's and a BTS pre. Is it possible to get into other p'up combos involving the BTS preamp? Like, as in replace one of the p'ups with another brand/model? I have a Bart 6RC I bought from a guy in these very pages a while back, and I'm sort of looking to use it. I'd have done this long ago (!), but I'm just a pretty darn busy guy. Anyway, any renegade p'up experrts out there would be welcome to chime in, chide, offer solutions...

Thanks!