1968 NASCAR International Stock Car Racing Rule Book NASCAR Grand National Championship Circuit Section 20-2 -- Bodies

(Original dimensions of all bodies must remain as manufactured, except for changes which may be necessary for rear tire clearance. No lowering of body or frame. In the interest of safety and handling characteristics, a non-adjustable spoiler not exceeding 1 1/2 inches in height may be attached to rear deck lid)

a. All cars must have complete bodies, hoods, fenders and bumpers and grilles in top quality condition. No aluminum, light alloys or fiberglass will be permitted as substitutes for steel for any parts of the bodies or bumpers. No die cast grilles permitted. Aluminum and fiberglass trim parts may be approved as replacement parts for die cast parts, but must be approved by the NASCAR Technical Director.

b. Cars must be neat appearing. Head lining may be removed, and if so, inside of top panel must be painted aluminum or white.

c. Floors must be complete except for tire inspection windows; no tunnels or air ducts. Engine firewall must remain standard. Spare tire well may be removed but hole must be covered with metal and welded. Cars must weigh no less than 3,650 pounds. Any weight added to the car must be located within the body shell.

d. Windshields and rear glass must be installed in their original standard positions and standard windshield and rear glass molding must be used and also installed in standard position. Chrome trim or molding must be bolted or pop riveted in a safe and workmanlike manner.

e. All doors must be fastened in an approved manner. Cars must have doors bolted with not less than 3/8 inch bolts. Recommended method, see rear pages of this Rule Book.

f. No streamlining allowed, such as headlights, radiator grilles, top of windshields or under pans. Cars must remain standard in appearance.

g. Fenders may not be cut or altered except for wheel or tire clearance which must be approved by NASCAR techical inspector.

h. Hoods must remain in original locked position and closed. All hoods must have a positive fastener on right front, left front and center.

i. Hoods and rear deck lids must have operating original type hinges.