All I know is that they installed the new Kickers recommended in the video on this website, which they had in stock, and showed me the old speakers that were shot after the job was done. They did not show me the casings so I have to believe that they used them. Fortunately for me I found a first class car audio and Mercedes/BMW/Crossfire repair shop just minutes from where I live in Longwood, Fl. I just accidentally lucked out. They will be installing a new fuel pump & filter for about 1/3 the cost quoted by the Chrysler dealer under $500.00.