here is one, I too am in the market for a 03-04 cobra, I PM him and seems like a nice guy and the car looks well taken care off, (I haven't seen it personally) price seems OK if it was any other color (except black) I would be all over it, but if he still have it in 2 weeks when I get a couple of days off and I haven't found anything I will be going to see it.
just thought you would like to know.
http://www.svtperformance.com/forums/terminators-buy-sell-254/591340-2003-ox-white.html
that is actually my color of choice. Just too molested for my tastes. Thanks for looking out though.