im putting on new exhuast from header back. Any info would be great.

 

pb blaster / liquid wrench each and every bolt, i even do the hangers. make sure you get the cat bolts, on both sides, and the header, on the manifold, and where the top half connects to the bottom half. do it daily for a few days before you start tackling the project. and 4 jackstands or a lift is a must, obviously. other than that, straight forward.