Unity's "Post Mount Style" Spotlights are vehicle specific. To fit and function properly, the correct combination of spotlight shaft length and installation kit is needed to mount the light. Just below is a search for finding correct shaft length and installation kit for your vehicle. By entering the year, make and model of your vehicle; the search will provide links to all available spotlights of the correct shaft length and installation kits for driver and passenger side Further down are links to different standard letter code shaft lengths and to the list of custom fit shaft lengths. Some vehicles require specially designed shafts that have been manufactured specifically for that vehicle. Those can be found in the Custom Fit Shaft section.