After 2 years of periodic calls and emails to durablue with no results I finally got ahold of someone there that had a clue. I asked for tech support and was connected with "Tom" after a brief conversation describing what I needed and the diameter of the axle, he took my number and said he would call back after talking to engineering. Much to my surprise he called back about an hour later with a part number for me 20-1636 for the second gen. posi lock for an eliminator axle. Im not sure where your at with having these made but it might be worth a shot to talk with the same person I did.