1969 NASCAR International Stock Car Racing Rule Book NASCAR Grand National Championship Circuit Section 20-29 -- Glass

a. Full windshield and rear window in good condition compulsory. Rear window must be permanently closed. No plastic covering. External fastening on rear window and windshield required.

b. All side window glass must conform to original size and thickness, and all opening and closing equipment must remain as orignally manufactured. You can race without side glasses.

b-1. Positively no Plastic side windows. All cars must have two steel straps not less than 1/8" x 1" on Rear Glass.

b-2. Plastic glass allowed in rear window only, but must be same thickness as original glass, and must be secured with 2 steel straps not less than 1/8" x 1" bolted to glass.

c. Windshield washers must be of standard production size and type. No hand pumps. No pressure systems.

d. Headlight lenses and sealbeams must be removed and holes covered with flat sheet metal and original headlight and rear light rims must be used.

e. Rear-view mirror must not extend outside of car.