I don't know the general opinion of the JTV-59 pickups out there, but I really like them a lot.  I'd love to know some more detailed specs.  I'm sure someone out there has removed their stock pickups in favor of replacements.  Do any of you have them laying around and do you have a multi-meter handy where you could measure them?  I don't have the time or money to experiment with all kinds of different pickups in hopes of finding similar ones to put in some of my other guitars...and I don't feel like pulling them out of my JTV and messing with the warranty, etc.  BTW - Line6/James Tyler:  I think you're missing an opportunity here.  The pickups are probably already manufactured and sitting in a warehouse somewhere.  Why not sell them on either the Line6 site or James Tyler's site with his other pickups?