I had the opportunity to fix (rewind) a lot of jazz bass pickups from 70's and that's how I came up with the idea to produce Mojo Gear Jazz Bass Pickups based on my notes and preferences from that Era. They sound so good for my taste! The right balance between tight low frequencies and sparkling highs. 
42awg plain enamel magnet wire
Alnico V magnet poles
Vintage Cloth Lead Wire
Black vulcanized fiberboard 2 9/16" (65mm) pole spacing for the bridge and 2 15/32" (63mm) pole spacing for the neck
7.5kOhm & 8kOhm (neck & bridge) DC Resistance
Wax Potted