[olddog]

Saying the SO is better suited to high performance use, is not saying that the CO is bad. It just means the SO is a little bit better. Just like the high risers heads are easier to make power with than a low riser head. It doesn't mean that good power cannot be made with a low riser head. It just takes more work and knowledge.

You can bet the race teams put a lot of work into the CO to make it better.

You can also bet that Ford didn't just build the SO for something to do. They had a reason!