I have rarely seen so much false information on Talkbass
Originally,
DJs have been fitted with
Aero J pickups.
Joe Osborns have been fitted with
Fralins, originally, of course.
NOW, the default option from Lakland in their jazz basses are their own custom
"Lakland" pickups. I believe they make them in-house, like they do the
LH-3s, which are only fitted in
-94 and -02 basses.
FWIW, I have never heard the Lakland J pickups, but have heard good things.