I emailed hipshot to make sure I was going to get the correct xtender for my fender mij jazz bass special. I was expecting their cs to tell me that I should go ahead and get the bt10 since their website says that is the one to buy for all japanese made basses. Much to my surprise he told me that the bt2 was the direct replacement for my instrument. The website states that this model is for 67-82 fender basses (I believe, not quite sure). Was he right? Any idea why an 87 MIJ fender would be using the 67-82 tuners?