Rotaxian, Briggs Modified is not the same as a Sealed World Formula. Briggs Modified will cost more because it is a builder’s class. Sealed World Formula is the same basic concept as Rotax Max or EasyKart. It runs stock, max 7200 rpm rev limited, you can only change jets, gears, kart setup and the driver.
adoonan, there are not enough World Formula races to make a regional class for CSC. I think it works best as a club racing class in Colorado. If you are going to go CSC racing you need to bring your “A” game and more cash.
James #45 WF @ CRE