Dezduster.
Yes, I have applied some aero tricks to the car except the grille area because of cooling effects.
Underneath I have painted mostly everything with slick paint. I've also made air dams that seal the rear bumper to the chassis in which 65' Dodges have nothing there but a parachute effect. The bumper drops down below the chassis and is creates a shovel into the traveling air underneath there.
There are other places on the chassis where it can use aluminum dams to decrease the drag. I am also planning on an engine dam/diaper plate that comes on and off for racing. I still drive on the street. Thanks for the ideas, it's still a work in progress.