For exterior surfaces other than bedliners or where a more textured finish is desired, you would use a product such as our Jeep Exterior coating or the Custom Color Jeep Exterior kit . This is presuming you were not going to purchase the equipment required for the pure polyurea application.
It would generally be best to either have us custom quote it, or inform us that you desired a smooth exterior coating with the comment entry field at checkout or through individual email. These kits provide a somewhat smoother finish which can more easily be waxed, but by default contain some of the coarser powder to allow you to control the final results.
For a totally smooth application, we would send only the finer powder which finishes smooth. The standard color kit should finish smooth, but you could also topcoat with clear without powder to make even smoother using an HVLP gun. The colored kit would already include this additional topcoat material.