Brian,
That's great info - thanks very much. I certainly intend to get to Mid-Ohio for the August event. The delay in replying was while I actually completed the purchase of the se7en. I now have it, have successfully negotiated the hoop-jumping of registration in Ohio and the car is on the road. This is a Chris (from sevens and elans) built car running a QED Vauxhall lump with various nice bits on it, including his Spa mirror set-up. I can certainly recommend his workmanship.
I look forward to seeing you at the track, and if you ever fancy a 'blat' locally, I am based in Powell, Ohio and would enjoy an early morning run to Hocking Hills one weekend.
James