Well most new trucks use an axel connect istead of hubs, in fact ford is the only one that still uses lock out hubs, except mabe Mitsubishi.<br>Well any way on new trucks auto locking hubs work well, but over time they will fail, so manual hubs are not only cheaper but you know for sure that the hubs are locked.<br>The axel dis/connect works very well, the older ones use vacume tubes from the engine, where as the new ones use an electric servo instead.<br>Dino <p>----------<br> Professional Ice and Snow Management <br>Products:Services:Equipment www.sima.org