Hey everyone, this is my first post. I have a 2006 LE and my check engine light came on and my engine is misfiring. Took it into a mechanic and was diagnosed as ignition coil #1 in the rear is failing. He recommended changing all 3 rear coils, all 6 spark plugs, and a couple gaskets that are leaking. He said to come back in a few days once his coworker who could do the job better and quicker was back in town. Since then, I've ordered the coils and spark plugs that I need and am shopping around to find someone who can replace the parts at a more affordable price. So my main question: which gaskets should I order and have ready to replaced the same time that the rear coils and spark plugs are replaced? I believe they are the intake manifold and valve cover gaskets but am not too sure. I am ordering all my parts from rockauto. Thanks.