<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by jrkermode:
Its pretty easy to mess about with a car's Cd, most notably by folding the mirrors and altering the car's rake, so be skeptical about the second digit in a Cd number. That said, here are some numbers for stock Vipers:
RT/10: .45/.52 (top up/top down)
SRT10: .40/.43 (top up/top down)
GTS: .35
Common aero mods, such as you have made, are aimed at increasing downforce, not reducing drag, meaning you made your Cd worse, not better.
<HR></BLOCKQUOTE>Thanks everyone for the great answers! I am still glad I did it for the looks as I don't road race, only street play.