Glory Days by Jim Wangers. Jim Wangers was an advertising executive for the advertising agency that had the Pontiac account since before the beginning of the Muscle Car years until the end of them. As such, he developed into the unofficial go-to guy for the performance offerings. When corporate GM issued it's various bans and prohibitions on high performance and racing, Wangers found work arounds, including feeding high-performance parts through Ace Wilson's Royal Pontiac in Royal Oak MI. who in turn, sold and installed the otherwise unavailable parts.

The story of the GTO is presented in detail, and there is a lot of humor in the stunts they pulled to get the muscle cars built. Other company's offerings are also presented. Overall, an excellent read, and is well illustrated.

While no longer in print, it is readily available at used book outlets. One of my favorites is www.abebooks.com.