After my Dad and I aquired a nice 71 Mach 1 Mustang, I decided to start a website dedicated to the 71-73 model years. It seems that many Mustang sites over look these 3 infamous years when the Mustang grew in size and changed shape dramatically. The site can be found at 7173mustangs.com and has been steadily growing with support from many other 71-73 Mustang fans! I have attached a photo of our grabber yellow 71 Mach 1. It has a 302 bored to 306 emgine with a mild cam, Holly Carb, Edelbrock intake and many other performance upgrades.