seems like the frontal area of the
1994 to 2001 Rams
was about 34.5 square feet

Chrysler has been bragging that the Ram's
aerodynamic Cd
which measures slipperiness through the wind
for the 2013 Ram
dropped to
0.38
but from the comparison photos above
the frontal area must have gone up
... perhaps enough to do away any improvement in the Cd.

Cd times Frontal Area
determines how much
horsepower it takes to drive high speeds