Street Racer magazine was published by Myron Fass of Countrywide Communications in New York. He was a publisher of pulp magazines and comic books under multiple company names. According to his profile on Wikipedia, in the 1970s he was known for being the largest multi-title newstand publisher in the country. He put out as many as fifty titles per month, and many were one-offs. He covered any topic that he thought would sell.
Historically, Street Racer is inconsequential in the muscle car magazine publishing realm. The magazine is included on this website strictly for historical reference.