"Petersen's Complete Ford Book" is a comprehensive guide focusing on the Boss 429 and 494 CAN-AM engines built by Holman-Moody in the United States. This book serves as a valuable resource for collectors and enthusiasts of American vehicles, providing detailed information and insights into these specific engines and their history. With a focus on the craftsmanship and performance of these iconic engines, this book is a must-have for anyone interested in vintage Ford vehicles.