I have a RWD MS85 - paid off. I love it. But I'd prefer it to be AWD. I happen to be the market for a lower-range RWD MS as a second car. I was thinking I could by a 60D and swap battery with my RWD85, effectively giving me an AWD 85D and a RWD 60. So, some questions: Does Tesla need to "do" anything to allow the larger battery in the 60 so it know's it's an 85KW battery? For that matter do they need to do anything to so the 85 knows it's got a smaller battery? Will they do it if requested, even for a fee? Of course I'm crazy to even ask. But what the heck, this is TMC!