I am a bass builder with no experience getting ideas for my first project. I would like to use a P-bass body with a fretless jazz neck, an added Jazz pickup at the bridge with passive J-bass controls (volume, volume, tone) and maybe a pickup selector switch. My question is about the pickguard- can I just drill the extra control knob holes in the P-bass guard, or is there anyone who sells them with more than 2 control knob holes? Are there any issues with putting the J neck on the P body? Also, are there any useful sites on the web dedicated to putting bass together (routing, pickup wiring, etc)? I would appreciate any input that you more experienced project builders could give me.