Protect and preserve your classic Mustang’s interior with premium 1966 Ford Mustang interior underlayment, designed to provide a solid foundation beneath your carpet and floor mats. This high-quality underlayment reduces road noise, cushions your ride, and helps insulate against heat and cold, ensuring a more comfortable driving experience. Made from durable materials that resist moisture and wear, it fits precisely to the floor contours of your Mustang for easy installation and long-lasting performance. Whether you're restoring or upgrading, this essential underlayment is the perfect way to safeguard your interior and keep your classic pony looking and feeling its best.