The problem is getting a baseline... I tried for a few years to get Bilstein to commit to a 'spec range' for a better test spec for NASA and Bilstien wouldn't do it... The current shocks that are used have such a large of a manufacturing variance that they would not commit. Now, it was 4yrs ago that I last tried so it could be better now.
Personally, I think a real race dampener should be chosen and grandfather in a change to the better shock over a two-year span. Dump the junk and go with a real shock - The new shock could still be procured through Mazdaspeed and should be sealed (by them?) too. There still is enough money in the class that I believe a move like this is warranted.
Back to under my rock.....