I bought my Roadster Ltd from a Chrysler dealer, paid the $150 and was granted the BALANCE of both the 3/36 bumper to bumper and the 7/70 powertrain warranties. The 7/70 warranty is assumable for 1st and 2nd owners only. (Documented Pedigree).
The 3/36 is assumable up to the 3rd owner.
If you can provide the VIN to a dealer they can run a check for status.
This is a link to the Chrysler .pdf warranty book.

Best of luck!

http://www.chrysler.com/crossbrand/w...late=crossfire