I would suggest that you either go to a dealer or go on ebay and purchase a new 2007 Mopar Performance Parts catalog, then you will have the proper part numbers and pictures of the upgrades you want, and then shop around for the best price, and you do not have to rely on what your dealer does or does not know. Most of the parts are universal, and will fit all the 2.4 turbos, Also you will need to give your VIN number when you order your Stage 1 kit and it will be programmed for your PT.
If you just need a few part numbers let me know, but you can learn a lot in a 5 or 6 USD catalog.