I'm looking for a regular production model reservation holder who wants the 21" rims. I would like to work out a deal in which I trade them the 21" rims from our Signature and I get the 19" areos and $1,000 boot. That way each of us saves $1,000. Tesla will not do the switch for us, so there might be insurmountable logistical obstacles, but there it is... I will be taking delivery in the U.S., or maybe in Toronto. If anyone is interested please post to this thread.