You'll need Advanced Adapters crossmember mount kits when using one of their transfer case adapters on your Wrangler. These heavy-duty mounts will make your engine conversion so much easier. These are not your usual car-type rubber cushions. Advanced Adapters crossmember mounts are thick and durable, as they were designed with the weight of the transfer case in mind, so they support a much heavier load and easily conform to existing skid plate locations. Make your swap easier with Advanced Adapters crossmember mount kits.