With all the failures that are reported, I am wondering if anyone has actually moved up to an aftermarket rear end. Seems to me a saw a thread that talked about one available for the titan. I am on my third Titan. Never had any trouble out of the first two. This third one has a 9in lift on it. I talked to the guy that had originally put the lift on it and he said that the rear end did go out on him once and Nissan replaced it but told him if it happens again, he is on his own. It's not making any noise or anything (it's an 05 by the way) but I have to admit I am a little worried about it. I am thinking I may take a proactive approach to it and put a stronger rear end in it. Anyone done it? Pros? Cons? Brand? Any other thoughts?