Wall could have a 6 cylinder Modified Division. Any make V6 or Straight 6 with 2 bbl carb. Pump gas, gasohol or methanol fuel. Build your own engine no engine seals. Any brand 10 inch wide hard compound tires 84 to 88 in circumference. Tires must fit thru a hoop rule and pass durometer reading. 245 cu inch 4L engine limit. Gear limit 5.42
