[Hubert Farnsworth]

From the Front, Same car mentioned on the left hand side of my posts as well as in the fuel log in the signature.
Although I was asking in general which is more important aerodynamically, sealing off the undercarriage, or redirecting more air around it by effectively lowering the front end with an air dam and possibly blocking the grille opening. It didn't have to be empirical data, just a rough estimate would suffice for the theory, as my current knowledge is more in tune with the powetrain side of things.