Hello, this is my First post, in the north east these hubs are used on Dirt Modifieds with the 3/8 blade rotors on the front and the 1 1/4 rear rotors. depends on what you are using them for, but in general not many people use Willwood brakes that much any more, they are very cheap but they just do not stop good enough for most heavy braking. I grew up building and racing Dirt cars in Pa. so these are what we used. I have lived and worked on NASCAR stock cars in North Caronlina for the last 20 years.
Brakes have been one of the most improved parts on Stock Cars in the last 10 years. Performance Friction is a great brake company for most short track racing nowdays, more expensive but you get what you pay for. Most commonly used brakes in my buisness are AP or Brembo, very good brakes very expensive.
Best,
Gene