I've got an Epiphone T-Bird Pro-IV bass, and want to put Nordy Big Singles in it. I can't afford the on-board preamp ( Nord 2b-3b) recommended for them yet, but- can I wire the Nordstrands into the existing stock-Epiphone circuit? Is this possible/reasonable, and will the circuit present any issues? Down the road apiece I'll do the right thing, but I can afford the pickups now... gotta move while the iron is hot, don't you know. Also, where's the cheepest place to get 'em?... Thanks.