This comprehensive General Motors Diesel Parts Book is a must-have for anyone involved in the industrial and oil fields. It contains detailed information on the Twin Quad models, including parts and accessories. The book is an invaluable resource for maintenance and repair, as well as for those who are interested in the history and development of diesel engines. With its clear and concise writing style, this manual is suitable for a wide range of readers, from experienced professionals to those who are just starting out in the field.