Thanks again everybody. Bottom line I think we're all car enthusiasts and that's what counts.
I don't particularly blame GM per se' for the dealers not honoring the GSU discount I was eligible for as I've learned the dealerships are independent franchises. However, I do think GM could have put more pressure on dealers to accept those. Kind of insinuated they should in a manner of speaking.
The EPP+ on for Dodge vehicles was optional for dealers as well. The Dodge website said so in plain English. However, I went to three different dealers before deciding on the Challenger and all three were accepting ALL the discounts no questions asked.
Also, when I called the "Chrysler Incentive Hot Line" I was on the phone with an American representative within 3 minutes who quickly answered every question I had and even gave me some tips when making the purchase to insure every discount was included.
All in all it was a very impressive buying experience.
I don't know how GM could solve the problem on their end, but they really should do something. Had I recevied the GSU discount initially, I'd have never started looking at a Challenger to begin with
as I've always been more partial to Chevy.