RE: Does anyone know where..
I would think the SRT8 "open" inserts would fit in the SE version, can't imagine Chrysler would manufacture a different size for the same model hood. Now the underside access may be blocked off as you mentioned. I'll bet SRT8 inserts can or will be available through Chrysler or mopar.
Like Jeremiah said, we've been discussing this for about a year. To me, the dropping of the functional butterfly openings on the concept with the K&N filter perched on the radiator support, fed by underhood ducting was DEAD ON...Too bad they didn't finish it that way. Even as the engineers argue about the bends, etc., bottom line is it was a major "cool" factor for the car and gave it even more old school soul...dang it...