Get the absolute most out of your Challenger car lift with the 10319 Truck Adapter and Extension Kit. Trucks, vans and service vehicles are easier to raise, lower and work on than ever before. The Challenger Lift Truck Adapter and Extension Kit comes with four frame engaging truck adapters (part #10318), four 3" stack adapters (part #10315), two 6" stack adapters, two organizer racks and all the necessary hardware to get the job done. Take your truck service to new heights with the Challenger Truck Adapter and Extension Kit..