According to feedback I received from Chrysler back in 2008, a window sticker copy could be requested from the original selling dealer for a period of up to 5 years from original delivery to dealer. The factory wouldn't handle these requests directly from owners. Chrysler told me the original selling dealer and gave me their contact information. But since it's been long past 5 years on these cars, I doubt that a copy of the original window sticker could be requested now.

You could run a CarFax report to identify the original dealer and then reach out to see if a window sticker could be had.

Or you can go to MonroneyLabels.com and pay for a window sticker that somewhat simulates the original window sticker. Some of these look okay. An example is below.