Thanks for the info. Now, if you truly enjoyed the build process with your Dad, you will probably fall into the "we need a new project" mode. I have seen this happen lots of times with people.

I am seriously thinking of doing either a Pietenpol or a Pitts S1C. I would like to make the Pitts as close to the original Pitts as possible (the original Pitts had a 65hp Lycoming). If you could make the plane VERY light, and hang an O-200 on it I think it would be a neat airplane. Budd Davidson wrote an article about flying a replica of the first Pitts that was built and it sounds like an fun machine.