I am still looking for the pic of the bass with the brown pickups. I am almost positive it is the same bass. I remember the serial number because I remember it being one off from #60. Anyway, it could have had the upgrade! But, if you look at the bridge pickup, it seems that it was filed down on the bridge side to fit the hole. I would suspect that if the bass was at Alembic for the upgrade, they would have made a cast of the proper pickup size. I could be wrong, but that pickup looks filed down to me.