Hey Folks, I have a 2016.5 Model S P90D. I saw in the Classifieds section of the forum a while back a vendor offering a 90 kWh battery for sale, along with upgrades to ludicrous for anyone who bought it. That leads me to ask - now that Tesla no longer offers the upgrade from the factory, what's actually involved, and could I have an Indy shop do it if I provide parts from a wrecked P90DL? I know there's obviously a software component to the upgrade, but what hardware is involved? Is it the standard 90 kWh battery? Different fuses and wiring harness to the battery?