fastest n/a slant six como??

Clifford is OK for headers, and manifolds. They also have a valve cover. I would not get a head from them (over priced for the results), as stated Mike Jeffery. There are better places to get cams and valve train parts, also. Erson Cams has been treating the slanters well. There is a special deal at www.slantsix.org

There are quite a few slant six racers in the Calf, Or, Wa area.