Hello, I was thinking the same thing last yr when I was looking at cab kits. There is a conversation floating around online about the steps to add the upper window section but I can no longer find it? It would be a hot seller if CFMoto introduced that option. It seems like an obvious marketing plan and makes sense. Has anyone split a full door to see what is involved? I would have bought the upper half immediately if available. Ended up buying the full Hardcab enclosure but the doors don't utilize the shock hinges...I found that odd.