Tesla Motors Club

My M3 LR RWD was delivered on 11/19. I love the car, but when I placed the original order the Performance version was priced significantly higher, and no non Performance AWD was available. Now Tesla lists the current AWD Performance version available for $64,000 - $13.5K more than I paid for my RWD (excluding fees/transport/etc). If the Performance version was available for that price when I bought my car, I would have bought the performance version.

Since TESLA wants to sell as many M3 cars as they car by yearend, if I go to my local Tesla sales office and propose selling them back my M3 and taking delivery of the Performance version of my car for $14K above what I paid for it, I'd get what I consider a wonderful performance car for not much more than I paid for my RWD LR.

My question is - If Tesla will agree to this (or something close - I realize the tax credit issue, and I'm willing to take a Performance demo instead of a new car) would you do it? Would you upgrade from the RWD to the Performance? If so, at what price difference, and for those who have driven both, is it "worth it"? I don't mind the mileage penalty of the Performance version, but I don't know how significant the ride quality, etc. is between the difference versions of the M3.

Any comments are welcome and appreciated. The window to make this change is very small given the expiring tax credits.