I have looked at various pics of the Nismo and Nismo-style wings. I havent seen a pic of the authentic Nismo wing that will answer my question.

Does the authentic Nismo wing have a recess in the top like the one in this Gruppe-S wing?




I dont see one in this Bavaria wing. It appears to be a "hump" on the far side of the wing, but I think that is just the lighting since the near-side doesnt have a "hump".