In 1963, Ford provided its salesmen with this confidential booklet in order to give them the information they needed to sell Ford’s line of 427 high-performance engines. The booklet includes details of the 427 high-performance engine line, suggested sales prospects and selling techniques, and, most importantly, specifications for the engines. Whether you’re running a 427 in one of your rides or not, the booklet serves as a fascinating behind-the-curtain glimpse into Ford’s approach to marketing the venerable 427 as well as an intriguing view of a time when gas was cheap and size–in cubic inches–definitely mattered.