2015 Tesla Model S 70D Motor

[Austin23]

New here and too tesla but I couldn't find concrete answers anywhere so hopefully someone can help. So I recently got a 2015 tesla model S 70D and I've read that once the battery needs replacing you can upgrade up to a 90 battery without much difficulty. But what I really want to know is if the rear motor could also be replaced to that of the P90D? I've heard mixed answers on this and I've also read there would be some software issues to really get that acceleration boost and just wanted to see if that was possible? I figure everything I just mentioned would not be cheap, but I'm really not worried about that at the moment, just want to know if it's possible in any way?

 

[dannycamps]

Possible? Yes. Cost effective?

 

[shawndh1]

The downside to this is the older LDU is prone to failure because of the liquid cooling and seal failure.