[MustangGT1990]

squid,

If your H-pipe was like mine, it had never been off the car for any reason. It turned out to be a pain. My stock headers had a stud and a bolt on each side. The 2 bolts came out fairly easy but BOTH studs twisted off. All 4 bolts connecting the H-pipe to the tail pipes twisted in to. This was no big deal because my BBK offroad H-pipe came with 4 new bolts. I ended up having to pull off both headers just to get the 2 studs out. So, I went to the local hardware store and bought 4 new bolts to bolt the H-pipe to the headers. The bolts were metric, I think a 12 x 1.5 thread pitch x 50 mm in length, anyways with new bolts I had the new H-pipe back on in no time. I'm not trying to scare you, I'm just saying don't let it get the best of you. These little 30 minute jobs can turn out to be real pains sometimes. But if you do change it out then swapping the 2 back and forth wouldn't be as bad if you were doing it every 2 years. That way the bolts wouldn't seize up and rust as bad.