I have not had time to try to get to the bolt. Thanks for all the help, I have been using all the ideas given to formulate a strategy for my weekend bolt removal project. I have been unable to find an extractor that will work. I have been drenching it daily with liquid wrench. I also noticed that the other end of the bolt is visible under the aircleaner and manifold. I am going to give it a few good whacks from the back end. Last resort will be to take it to a welding shop and have them weld the 10 MM allen head socket to the bolt and when I get it loose cut it off so I can pull it the rest of the way out.

Darryn