Section 15.6.12 discusses what must be done to permit the driver’s door to be “gutted”. However, the rules don’t clearly discuss what is allowed for the passenger door. If a single diagonal or “X” door bar is utilized, how much of the OEM passenger side door structure must remain to fufill the rule?

1. No structure, door skin only
2. OEM side impact beam only and door skin
3. OEM side impact beam, inner sheet metal, and door skin