I've recently won an auction for a 2005 Titan which I haven't picked up yet. The owner states that it has a rear locker but it has no Off-Road Package. I'm not certain that he's correct. Any help? It's my understanding that the OR package is required to get the locker. Also, there's no switch next to the Tow Mode switch on either side. I'm also under the impression that the switch is located there. Thanks in advance for any insight. Clearly, I'm a Titan newbie so I apologize for the potentially dumb question!