My first car, 2012 S85 had a dual charger and i had installed an HPWC. I liked it and i enjoyed the quick charges even though I did not have too many times when i actually needed to charge very quick. My new one, 2015 S90D, i bought it from a showroom, love it but it has a single charger. A friend is willing to sell me one of his chargers from a 2014 S85. Telsa is making it sound like a big deal. They want to charge $1000.00 for the transplant, and they are not even sure they can do it. $1000.00 for a few bolts and a hose connection followed by running some script on a computer? Has anyone done such a transplant. Are they being helpful you think? I sure am finding the SC is getting less and less helpful as days go by, especially compared to the old days in 2013. Thanks.