GM uses letter codes for their class/chassis platforms that were used by all divisions. The full size Pontiacs were known as “B” bodies, the mid size Pontiacs of the era were known as “intermediates” or “A” bodies, the Firebirds...
The Pontiac Firebird was introduced to the market in 1967. It happens to be the only year where the VIN plate was a stainless steel plate riveted to the door jamb. All subsequent years till the Firebird was pulled off the Pontiac production line had their VIN plate...