[JohnD]

Agree with tristan, very much, but here's a few:
http://www.miata.net/sport/Physics/
http://www.mayfco.com/dragcoef.htm
http://www.stoptech.com/tech_info/wp...rakedisk.shtml

On aero, see Prof.Jo Katz on "Race Car Aerodynamics"

Good luck!
JOhn