hey guys the stock muffler on my f has two hole rusted in so i found one to put on it . here is the question first off there is a clamp that holds it the frame got those bolts out then there is a bolt and i don't know what the thing is that holds the muffler to the headers how do you get the other stud/rivet out then when you do get that off does the muffler just slide out or is there a spot weld or anything else. and if i do take it off is the muffler gasket going to be usable again