Welcome to GS By The Numbers Presented by Atlanta Buick Specialties,LLC.

Hello my name is David Walker and I’ve been around Buicks for a long time especially the Gran Sport / GS cars. In the mid 90s I created Atlanta Buick Specialties with a website that contained information for identifying and restoring a Gran Sport / GS car. And from this information the series “GS By The Numbers” field manuals were created. The books are year specific and contain body, color ID codes, drive train and individual part cast and stamped numbers to help with your project or salvage yard discovery.