1971 Ford Mustang Boss 351 Classic Outline Design Grey Tshirt PLEASE BEWARE. Shirt and design are EXCLUSIVE property of MADDMAX DESIGN. Our shirt prices start at $20.00. If you see a lower price and do not see sold and shipped from Maddmax Illustration and Design above, it is a counterfeit and cheap overseas imitation. Unisex sizing Machine Washable Officially Licensed Ford Motor Company Product Proudly Made in the USA.