This is a fairly simple GPS deck installation, but because the double DIN mounting kit for ’04 Matrix is a universal one.  Therefore, it created two 1/8″ gap at the edge where the deck connected to the black mounting kit.  I needed to fill the gap with glue gun and carefully remove excess glue to create a cleaner transition.  Can I make it better? Yes, but not without fabrication another ABS board and charging extra to customer.  This way, it’s simple and the end result is not bad either.  If you can’t see the gap of what I am talking about, then I have suuceeded.