2. Max Category - Interior

You can customize your interior so you can replace (but not remove) the carpet, seats, trim and maybe even paneling. We're not going to argue too hard if you do things like remove package trays and such, but we don't want bare interiors. Bare metal interiors are race cars. Unless you can show us a REALLY compelling reason it's done that way on your street car, we're going to consider bare metal/stripped interiors an Unlimited Category car. (It better look like the Hughes H-1 Racer in there.) "Because I like battleship grey paint" isn't a compelling reason.

Of course, if you add roll bars, you can remove all that stuff from the front seats back, and if you put a cage in, you can remove everything but the dash.

Max Category Interior - Full Rules

1. Cosmetic interior components like panels, carpet and seats may be replaced (but not removed), as long as fire walls are retained and fumes are not vented into the cockpit. Panels may be added to insulate the driver from venting and exhaust. The driver’s normal seated position may not be relocated, unless it is a right-side drive conversion to match existing production cars.

2. Fuel tank/cell may be modified or replaced and must be separated from the driver/passengers as originally manufactured or by a metal panel/bulkhead if the OE structure is modified. If the fuel tank is moved from the OE location, it should be a motorsports-style fuel cell constructed of a housing, bladder and foam. Fuel must not vent into the driver/passenger compartment directly or indirectly.

3. As with Sport/Tuner Categories, there is a “safety loophole.” If you add a roll bar meeting Safety Level 2 Standards, you can remove carpet and trim (convertible tops included) from behind the driver and passenger seats and even replace an airbag-equipped steering wheel. If you install a full cage meeting Safety Level 3 Standards, you can remove all the trim and carpet other than the dash.