Phil,
There is a fellow in Ohio by the name of Bill Lutz that races a twin turbo 10.5 Camaro and his business is insurance, especially race car insurance. The name of his company is Central Ohio Insurance Services and I believe it's in Canal Fulton. I know he's testing today at National Trail, so Monday might be a better time to talk with him.
There is also a fellow, whos name I can't remember right now, that raced at Quaker City for many years and I saw him racing at Magnolia a few years ago with his Stock or Super Stock Firebird. He also writes race car insurance. When I think of his name, I'll PM you with it.