the whole system from the headers to the muffler
Uranium, There are aftermarket exhaust systems that basically bolt on Those kits have the metal exhaust tubes prebent to accommodate vehicle application If you are not using one of those, then you will need to have a tubing bender, oxy-acetylene torch and good welding skills. I am a N.I.A.S.E. master tech. with close to 30 years experience and whenever I am replacing an entire exhaust, I just take it to the exhaust shop where they are equipped to do the job right the first time.