This book narrates the work required to develop the first production Ford-powered AC Ace 3.6 roadsters that today are referred to as Mark I Leaf Spring Cobras. Seasoned Cobraphiles, novice enthusiasts and especially those who had the foresight to buy the cars, will enjoy the hundreds of fascinating snippets and backstories about the people and the cars. The author has researched each of the 125 production Mark I Cobras built and conducted several hundred interviews with the people connected with each car. This endeavor uncovered unknown histories and facts, as well as hundreds of previously unpublished photographs and documents.