B. Johnson : The 911 & 912 Porsche: A Restorer's Guide to Authenticity

Recognized by Porsche enthusiasts, concours judges, even the Porsche factory as a definitive guide to Porsche authenticity. Get a detailed look at the year-to-year changes in body, chassis, trim, and interior components. Virtually every part is described and photographed allowing owner and restorer to determine originality.