I'm not sure how I reached this conclusion, but I thought the BF RBA kit would fit the Delta II tank. And while I'm very happy with the drop in coils and their in-flow control valve, I don't think the kit will fit the tank? But it's important to note that I've never actually tried to fit the kit to the tank! Seriously though, it doesn't look like it would fit? Anyway, would it fit the Cubis tank instead? What can y'all tell me about this kit anyway?