You can run anything with a v8 engine with a 2 barrel carburetor and must use ten (10")inch wide track tires. Stub Cars: No Weight Penalty Late Models: Must add fifty pound weight in front of radiator or 75 pound weight over front wheel. Four barrel carb. must have secondary linkage removed. Two barrel carb, gas or alcohol, recommended Tires: First win-2 track tires required-- second win-4 track tires required. ANY RULE NOT COVERED IN THIS BOOK WILL BE DECIDED BY TECHNICAL INSPECTOR. TECHNICAL INSPECTOR’S DECISION WILL BE FINAL