Due to not understanding the new ebay 1-click bid (it only raises to the next amount, and not what is entered in the box ~) I lost a bid I was prepared to bid higher on. (someone got a good deal) It was a '90 Fender Precision bass plus Kubicki pre-amp. As soon as I saw it I knew it was exactly what I wanted for a project bass. I knew Fender did the Kubicki-pre Jazz, which tonally sounds very much like a Factor, (I've owned a few and know that tone) but I wasn't aware of the 2 stacked-pot P-bass pre-amp they also did.
It's probably very rare when these are ever available, but If anyone has one for sale (pre-amp alone), please PM me as I will pay a fair price for one.
As a concession, if you can recommend an active 2 stacked-pot pre-amp that is currently available for a P/J set-up, I would appreciate it.