RE: Why don't automatic R/T's have functional hood scoops?
None of the Challenger hoods, be it SRT or RT (or even SEs) have truly functional hood scoops. Yes the SRT's (and perhaps RTs) have scoops that funnel air into the engine compartment...they do nothing for perfomance (Dodge says that they help with the coolong).
The scoops as they are designed, are both to small and to close to the hood surface to be truly effective. And if you don't believe that, just read the performance studies that Chrysler themselves wrote back in the 70's. They tested all their scoops from the shaker to the 6-pak type..including after market tunnel ram scoops...they find that the scoop opening had to be at least several inches off the hood surface to truly work as intended. (Cann't remember the idea size opening or height). The only scoop that worked close to the hood was the cowl induction type, which took in air from the low-pressure area at the base of the windshield (Chevy and NASCAR designs).