My guess is that it is probably too late to change the order through the ordering system... However, since it is just wheels... Your dealer could easily swap them for you.... That said, I doubt they would accommodate this because it isn't going to profit them unless they know someone who wants to buy those specific wheels. You may want to shop them around among other ST buyers.. see if anyone who didn't order them, wishes they had... arrange a swap?
That said, it doesn't hurt to ask your dealer if they can change the order... just in case.