Welcome swarm my son inlaw is 6'10" tall I could fit him into daughter's corvette. He now drives her cts with seat all the way back and tilted back. So don't think you will have problem in SS more room than a cts.I really want to sit in the car first. I don't think there will be a room issue with the SS but being 6'4" I've written off owning a lot of cars just because I don't fit. A test drive would be great too.
I haven't ordered one yet, but the one that is going to be at the dealership near me has not been claimed yet.