Steel gussets are required on door bars on driver's side or door plates. Four-wheel brakes required. Fuel cells must be bladder type with a metal container. Maximum 22 gallons. Fuel filler required on left quarter panel.
Check valves required on filler neck and vent.
Fuel line check valves required. Seat belts must be mounted to seat mounting bars, none to floor. Aluminum racing seats required. Headrest highly recommended. On-board fire extinguisher system required with one nozzle in driver's compartment and recommended in fuel cell, engine area.