Any "simple" job always takes me hours. Not sure, by every time a job seems easy, something always goes wrong! I've taken off the exhaust on more than one occasion and it's pretty simple. The hardest part was getting the old crush gaskets out. They can be a PIA. They can blend in with everything else and you won't even realize they are in there. I ran with my old set and new set in there until I confirmed with my friend that was helping me that he never took them out..... oops. Good luck.