That unfortunatly happens to classes as the years go by. Top Gas Dragsters (got stuck in Comp), Pro Stock Truck (stuck in Comp), Super Elim (7.90 index) & they went into all kinds of classes, probably T/D and T/S. Pro Comp was a great class, but it morphed into the current T/AD and TA/FC. Anybody remember Gas Coupes & Sedans, or modifed roadsters, or the original AA/FC, which was AA/ Fuel Competition, and the car was basically a dragster chassis with a Fiat body on it, not too much slower than AA/FD of that time (early '60's). Ah well....