I looked at that option as well doesn't work as they have to provide proof of ownership etc in US and VIN number is a giveaway that its a UK vehicle. I tried for almost 10 months before I went the official route
Chrysler 01753 511431 customer care on option 2 James was customer care manager who gave me a case number and followed it through with my nominated garage until key was delivered.
You decide - I have a key took 6 weeks over christmas