I'm posting this for a friend who doesn't frequent any Forums. He has a 2009 Viper SRT10 Coupe with the 21B Customer Preferred Package. With this package the car came with the ACR rear winged spoiler with solid end plates (no slots) In 2010 the same car came with 2 slots in the end plates. We went to Chrysler and ordered the end plates using the vin# from a 2010 ACR having the slotted end plates. When the parts came in they were solid. Our dealer ( Raceway Chrysler in Rexdale ON Canada ) contacted the parts warehouse and all the plates in stock were solid. Both years show the same part # for the plates despite one being different. Anyone know the correct part # ? Or can someone assist us in sourcing the correct plates?