I’m a huge Jaco and Marcus Miller fan, and I’m in the process of building my own jazz bass. I want to spend some time only using the bridge pickup. I heard some people say that Jaco used Bartolini pickups in his J bass, but I don’t know which one. I know Jason Lollar makes awesome pickups, but they’re $90 each. I’ve also considered Seymour Duncan’s vintage style jazz pups. Thanks everyone.