1960 NASCAR International Rule Book Specifications NASCAR Grand National Championship Circuit Section 21-22 -- Glass

a. Full windshield and rear window in good condition compulsory, but may be protected by a colorless transparent plastic covering. External fastenings on rear window and windshield recommended. Plastic coverings must be removed in pit area only and not while car is in motion.

Championship points will not be awarded to any car starting without rear window glass. Rear window glass may be replaced with a transparent sheet of plastic not less than 3/16 inch thick, but it must be securely fastened and must remain in place throughout the race or points will be forfeited.

b. Side window glass optional, but must be in good condition if used. No plastic windows allowed bolted to outside of car.

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 sheet metal. Wire screens not permitted. Minimum penalty, forfeiture of points for the event.

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