AISIN or 68RFE on new Ram 3500

I would not want any 4x4 without manual locking hubs on the front axle. It's a shame most of these manufacturers have abandoned front hubs (except Ford, but only on some of their trucks).

I put manual hubs on my big International truck, which came originally with full time drive flanges. Made a little difference in fuel mileage and alot less wear and tear on the front end.