E-Berg has taken the new china housings and added quality guts with correct for many--curve--if you have a wild cam etc then an FBO plate in one of those makes it right on the $$ I have been using them and have been impressed with what you get for what you pay and--they come with cap and rotor so No they are not just a proform deal his site or ad tells the exact curve numbers

To me it looks like the best bet overall and I have bought a pile of them