If you are still looking for a cobra i have a 2003 with a 2.3 whipple making 614hp to the wheels if you are interested. Asking $22500 I am located in Colorado. If you would like more info or would like pictures let me know.
I found a 10th anniversary Cobra in California with 28,000 miles for $22,000. If your still looking there is a guy in Sanfrancisco selling a 03 for $20,500. It's pretty nice.