Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Light reading, font size inflated to fill the volume.

This book consists of three columns per page with such a large font that there are usually four to six words per line. Talk about an inefficient reading format, two columns would have reduced eye shift going from line to line. It's as if the publisher was trying to turn an eighty page book into it's present 135 page form. And there are very few diagrams; most of the illustrations are photos with little information.Hoping to find a compendium of performance how-to's for 1969-1989 911s, I discovered it highlights 1969-73 only, with the author's 1970 as the main subject. It's more of a step-by-step description of what the author had done to his vehicle.I wish this book were titled "My odyssey building up a 911S" instead of "Porsche 911 Performance."