Chris,
You might look up Emerson Motor sports. I think he still has a link on here. His cars have a 94" wheelbase and he custom builds the doors, seats and anything else to fit the person. His prices are on the high side though, but the cars are very good. However he has build cars for people from 6'8 and over 350 pounds down and they all could get in and out easily and were comfortable in the cars. You could contact him for ideas and then decide what you might do. Also there are others on here that will do custom work such as narrowing the transmission tunnel, dropping floor pans, and so forth to get more room. Oh, and welcome to the club.
Ron
