"Each of the three companies (Hyundai/DCX/Mitsu) was supposed to design their own cylinder head/top end including cam actuation/VVT although they still share quite a bit of parts."
Above statement is true. DCX did the top end of the SRT-4. Exhaust manifold too. Getrag seems to be the truth on the tranny too. There are a few buzzing around here at CHRYSLER. (Note the lack of Diamler already). And YES, the Challengers are around too. I saw one with the '71 R/T Hood, albeit was camo'd with leather "bras". Now, this new Chery car would be funky to see with a SRT-4 motor in it. If it is the one parked on the back lot, that thing has to be the size of a Yugo but it looks like an Easter Egg with a tiny grille. It only takes up 2/3 a parking place. It looks disposable. : ) It would haul @ss with any decent HP.