What Bill said. Find your local Cars and Coffee (or equivalent) and hang out with the Cobra guys. I've never met one yet that won't give you a guided tour. Some will even take you for a short ride but I've never met one yet that will let you drive.
The reason is that they all "fit" differently and to some degree, you wear a Cobra since the driver's cockpit is fairly small.
Then think seriously about your plan. There are so many finished cars out there. Are you thinking of assembling a kit to save money? Are you a skilled fabricator? The bottom line is that there are MANY built and sorted out cars available on the market here and on cobracountry.com. Kit building is a passion equal to the Cobra passion, but many "kits" go unfinished or take years to complete and people lose interest. Do you want to drive the Cobra or build the Cobra (and building could be equally applied, to say, a 32 Ford). In the end, if you build it vs. buying one you'll maybe pay yourself minimum wage. For example, someone queried here within the past few weeks about a commercial shop that would finish a build.
Good Luck with whatever avenue you choose.