RE: 71 grille and stripe
One thing on the '71-style grille: I read that one reason they changed the concept's grille was that it didn't perform well in wind-tunnel tests. Apparently, the design on it created some kind of a vortex right in front of the car, which is part of the reason they went with the flat, '70-looking grille. That's something to keep in mind if someone does come out with an aftermarket product.