Steve,
I live in NJ and used Condon Skelly.
http://www.condonskelly.net/
You'll need photos of engine bay, interior, and exterior shots of all four sides.
I have a 427 Venom with a 92 wheel base - I'm 511 and have legroom to spare. But I wouldnt go on wheelbase alone if legroom is a critical design element. I would check the actual interior legroom dimensions. Furthermore, if the wheelbase is too long it may actually affect the overall proportions.
Good Luck
Jong