If you want a quality Cobra with a proven performance I.R.S. suspension and you have a modest budget check out Randy Hunter's Cobras in Ocala, FL
http://www.missionlabs.com/hunters
I have car #009 and am really pleased with the quality. These things are what sold me: Randy Hunter, Affordability, Corvette Suspension set up for deep dish wheels, steel floor, hand laid vinylester Body, fully lined hood, trunk and doors. If you are over 5'-10" you might consider one of his streatch models. The doors IMHO look better than most streatch Cobras. I am 5'-10 and I have a standard 90" WB Cobra.
I did most all of my own work and almost all parts are new and I have under $23k in it to date.
Ruble
Treasurer Deep South Cobra Club