I just got my truck back from the dealership yesterday after having an exhaust manifold replaced. I guess they apparently start rusting out. I have a 2006 Ford F250 with the 5.4 gas motor. The passenger side one went at about 39000 miles and the drivers side just went at 43000 miles. The dealership says they replace these all the time. The next time one goes it will be coming out of my pocket. Was wondering if anyone has found a higher quality one that will last longer? I'm hoping when the day comes that I have to foot the bill, I can replace it with a more reliable one than Ford uses. Fortunatly when they did mine none of the studs broke. Any advice?