hello, I have a 2001 F150 5.4L I have an exhaust leak (looks like a manifold gasket). I have an appointment to have headers installed but after researching what kind of headers would be best I've found most people recommend keeping my manifolds and just getting the leak fixed. The truck was never used much for pulling till this year when I bought a small camper. now my manifold started leaking about two weeks ago. so, tell me what you think. people say the headers are more prone to leak and the manifolds will be more dependable. they've lasted over 140,000 miles.