Hello, new to the forum. Let me start by saying I am NOT mechanically inclined so I prefer to leave installation of aftermarket equipment to someone who knows what they are doing. I recently purchased the full package for my 2013 SHO from Livernois. This includes the downpipe, cat back, 3 bar, therm, and CAI and H&R springs. I have an option who is willing to install but I am looking for some input from people who have experience and knowledge if there would be a better option and an approximate price for the total install. Will the dealer do this install even if there are aftermarket mods? I have owned my SHO for over two years and I am really looking forward to experiencing all the SHO has to offer. Any feedback would be appreciated!!