Shiftworks Automatic Shifter Conversion Kits are a cost-effective way to upgrade your transmission without buying a new shifter. Each conversion kit contains everything needed to upgrade your factory shifter to work with the new transmission; while keeping the original shifter appearance of your Buick. In addition to the conversion kits, Shiftworks offers shifter assemblies, connection kits, and a variety of other components to update or repair your shifter.