Tire grooving ok. No electric fuel pumps. No extra water, oil, or transmission coolers allowed. No bolts welded to frame. No wire bracing anywhere.
Fires are immediate elimination.
Wheels, no bead lock or screwed wheels. Any gas line inside of car must be metal tubing. Recommended under the floorboard and all rubber plugs in floorboards must be knocked out. No alcohol or ether equipment to assist you in restarts. Welded shut or bolted-closed is mandatory.