Well...the OP's question wasn't about the 2.7L engine. He was just using it as an example, and I imagine he's smart enough not to get that in a Charger, seeing as he's stated he won't, so I would say forget he mentioned anything about a 2.7L engine.
To answer your question, I have been following the Charger's progress for some time, looking for the same thing, which is any major problems, and as of this time I have not heard of any at all. At least not comparable to a 2.7L Trep. Just remember to break it in nice and easy like :P