This is a factory original manual written by Buick Engineering staff to train salespeople on the features of the new models. This book describes mechanical and styling improvements of vehicles by explaining in detail how vehicles changed from the previous year. You will find detailed interior/exterior photos and mechanical drawings. Specifications include interior and exterior dimensions as well as engine specs. You'll see detailed descriptions of optional equipment such as air conditioning, power seats, power windows, power door locks, cruise control, automatic level control, heavy duty cooling, radios, defroster, and speed alert system. Some of the information in this book can't be found anywhere else. Buy now for this hard to find book.