Sweet it is! I just made a post on 12/8 looking for high-flow cast iron manifolds. I,m building a Velo Rossa kit and want to keep as mush noise and heat under that fiberglass bonnett as possible. I almost became a coated header convert but these things are just what I was looking for! I've got aluminum heads, intake, etc. so I don't mind some extra weight.
Thanks for the post!!!