Spares. I am contemplating a gear swap, and driveline buildup. Figured I could just buildup my spare d60 and d80. Install new lockers since I haven't setup my own gears yet. It runs me about $500 to get them changed. Might as well just do it once, that way I can leave my current axles alone. I have one I would probably sell. You should see my garage, I was big into jetskis years back. I have complete engines, electronics, pumps, and impellors for all 3 types of skis that I own. LOL