The OEM GM Hurst shifter is going to be a lot less common and the cars that they typically came on were built in very small numbers (example are the Pontiac models were only available in 1979). Buick and Oldsmobile I believe offered their A bodies with the 4 speed in 78 and 79. Chevrolet made 4 speeds in the states and Canada through the 1980 model year. They did continue availability of the 3 speed manual transmission on the Chevrolets in 1981 but they were only available on the Chevrolet V6.
Maybe someone else can chime in on the availability of manual transmissions after 79 on the Buicks and Oldsmobiles as I do not have any info on them.
I do know that one of the rarest parts for any of the A body 4 speeds is the original shifter knob. The one used on the Hurst shifter models is especially rare as it is similar to softer vinyl and plastic knob used on the ITM shifters but it does not have the "LIFT" wording by the R.
Maybe someone else can chime in on the availability of manual transmissions after 79 on the Buicks and Oldsmobiles as I do not have any info on them.
I do know that one of the rarest parts for any of the A body 4 speeds is the original shifter knob. The one used on the Hurst shifter models is especially rare as it is similar to softer vinyl and plastic knob used on the ITM shifters but it does not have the "LIFT" wording by the R.