RE: 7.0 Hemi?
Let me rephrase that, both of these engines are indeed real in one way or the other, but testing in terms on them being in the Challenger have not been done, of course I suppose there is a chance that they could be testing them, though by indications they are either having problems with it, since they are bringing out the 6.1 in the Challenger, or they want to have a unified launch. Or, I may just be screwed up all around and have no clue what I'm talking about. Wouldn't be the first.