Okay straight to the point. i have a jazz bass, with two vintage, alnico single split coil pickups. what i want is the ability to 1: have a passive mode, standard jazz set up, a volume, volume and master tone. and 2: active mode, with an eq, bass and treble boost/cut. I fell inlove with the electronic system of the Carvin SB5000, after watching Ed friedlands reveiw on it. is there a pickup company offering an aftermarket kit like this? im not looking to buy a carvin bass, i wouldlove to have a modified jazz bass! here is the review!!!