How manu Buick GS 4-speed transmission cars did make?

There's no single definitive answer to how many Buick GS models with a 4-speed manual transmission were produced across all years. Buick didn't keep precise production figures broken down by transmission type in a readily accessible way for all model years. The numbers varied significantly year to year, depending on the popularity of the 4-speed option compared to automatics. To find out a specific number for a particular year and model of GS would require extensive research into archival Buick production records, which are not publicly available in a compiled form.