Hi Toddsusan. To protect yourself...Have you already told the Dealer/Salesperson you are using an X-Plan PIN? Did they write up the purchase as an X-Plan sale?
Accepting X-Plan sales are up to Dealer discretion. So be sure you have a written purchase agreement from the Dealer clearly stating that the sale is an X-Plan sale, with the X-Plan pricing clearly stated. And get this done before your vehicle arrives, so you are not under pressure at the last minute, with your brand new, shiny Corsair beckoning you to sign the papers and take her home.
Let us know how you make out and good luck.