Options for Nissan transfer case upgrades can be limited and strength here was a goal as well. Aaron opted for a two-speed Atlas, which tucked up nicely under the floorboards without any great loss of ground clearance. It mated to the rear of the Nissan auto tranny using an Advance Adapters conversion. He used the Advance cable shifter kit to position the shifters where he wanted in the factory hole in the floor. Custom skidplates and t-case supports mount between the framerails.