Mopar sells an aftermarket ECU, I don't see why it would care that you had a Hellcat engine instead of any other Gen 3 Hemi?
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http://www.mopar.com/assets/pdf/performance/catalog/Hemi_Gen_III.pdf
Dad looked into it for his 6.1 Satellite but it was pretty expensive and he's a budget kind of guy.
He's using some Mexican manual transmission Ram PCM with an older overdrive trans that he made his own kick down set up for the drive by wire pedal for. That manual trans truck ECU was something that worked without all the other inputs. If you want to know more about that as an option I can ask him.