Excellent book. Had that exact early edition copy in 1983 after buying my first Mopar. The book disappeared long ago and when it was time to get back into Mopars that was the first book I re-bought. Still relevant. Good info in that one. iMO, one book is not enough though. It takes a combination, some are a little vague or not as in depth as needed. Great here, lacking there. The more the better I say