Michael,
First welcome to the club and second, yes you can get a Cobra that you can fit in. Several manufacturers will lower floor pans and change thing to customize for your size. If you are looking for one that will closely resemble an original, then the stretched wheelbase kind is out. But if not, then you could talk to Bill Emerson who advertises on here and he can tell you all about the ways to make a car fit as he has built some for very large and very tall people. Also I believe, but am not sure, that Kirkhams will work with you and make adjustments so that you can feel comfortable in their car which is a top line car that looks very original. anyway, you will be able to find one that you can drive and enjoy. Have fun nd ask all the questions that you want.
Ron