Re: Srt6 ecu/ecm
You may come up short on this one. I had purchased all of the electronic modules from an SRT wreck located at Niagra Auto Wreckers just over a year ago. I've installed all in my NA-SRT conversion.
You should try forum member Rudy Compart for a possible replacement and associated programming.
Good idea to also watch EBay on a regular basis. When they show up they don't last long