What are the hulls that you have Rich? Can you post a picture?
A measurement of main beam position measured from the bow would also be a help...
There is already a very successful F16 modified from an A Class in the class. It is called Altered. You can do a search on this forum for the story behind her. I don't know whether or how Gary calculated the main beam position (I know he took about 18" off the bows and 6" off the sterns) but the result is very successful.