Rules Update: Nostalgia ET OPEN TO ALL MAKES 1973 or older vehicles. 1/4 Mile. ET break 13.00 and Quicker. .500 FULL TREE. Index style racing: 8.50-8.75 9.00-9.25-9.50-9.75 10.00-10.25-10.50-10.75 11.00-11.25-11.50.11.75 12.00-12.25-12.50-12.75 13.00 Footbrake Only. 2-step allowed on Manual Trans cars. No Tire Size restriction No Carburetor restriction