I had never rebuilt any engine before tackling my 1954 Ford NAA. This book was invaluable in stepping me through every system - what was important and what was not so critical. Not only does it go through every engine components in detail, it covers the auxilary systems as well such as the fuel and cooling systems. It does more than tell you the "what", it also tells you the "why" as well and is filled with sidebar tips and tricks on how to do it right the first time. Since that engine, I have now rebuilt two Ford 8N engines and am currently working on a 1939 9N - I still pull this book out constantly.
I don't write reviews often - this book is worth getting the word out on. You simply will not be dissapointed acquiring this book for your referernce and will get much more than your monies worth.