Again, thats a question for Eurocharged or Josh at the Mercedes Swap Shop. As I said, I don't know how much they can do to program a donor ECU to your car. I do know that if you find a SKREEM, ECU and Keys to an SRT that came from the same car, you can put all three items in your car and be good to go.

Now, the only drawback is that the electronic VIN of the car will change to the VIN of the donor car, so online emissions tests cant be passed by your car, cause the VIN wont match.
But other than that, getting those items from another SRT WILL work.