For the record, I like the bass, and am planning on playing this bass stock for a few months to see how I like it, but I almost always have to mod every bass I have so here goes... I just got a 55-01, and I was wanting to get a bit more variation in the tone (A few more mellow vintage tones maybe?). It is a 2003 model with bart mk1 pickups and the mk1 preamp. I found upgrade bart pickups (in the mk1 shape) and the ntmb preamp on the net. If I can only change pre or p/u's which should it be? For the record, I am playing fingerstyle and mostly vintage/rock/pop. Also, can anyone ,who has experience with both,describe the difference between the mk1 p/u's and the bart cb series soapbars?