Hello there, I have a J set of unknown pickups. I know they are from the late 80s early 90s and were on a custom bought bass that my parents bought me as my 1st bass years ago. They paid around $800 for the bass in around 1998. When i first started tinkering with new pickups I replaced them with Bartolinis which i love and forgot about them. As a beginner years ago they may have been a really nice set of pickups. Help me figure out what they are! Any thoughts guys?