Includes 5 conversion groups for install. You will need to know if your machine has air or electric start, standard or XLP wheels, a pre or post-common cab, among other details. Command Ready and Command Installation Kits work with the latest out of the factory, meaning older machines may have to purchase vintage kits for compatibility. For further details, reference media available at catpublications.com and SIS2.cat.com or contact your local Cat® Dealer.