Taffy, quit trying to win my heart, but thanks though, you are quite charming!!
I believe that they also have a twin 400 sleeved down to 350 to make the 700 class. They use NAHA rules and not AMA.
from what I have seen, they've never had serious engine issues from extracting power at high revs, except for twisted cranks on NOS. Apparently they vibrated quite badly, but still ran.