The head unit on my Mach 1000 system has decided to quit working so I am looking to replace it with a modern style head unit. Thinking I can get something fairly basic and still get voice calling/answering and Bluetooth streaming but also considering a touch screen unit. My conscern with a large touch screen is what they are like for viewing in the sunshine in a convertible with the top down (pretty much the only way I drive my Stang)! Anyone with a convertible have feedback? Anyone replaced the Mach 1000 head unit on their New Edge Stang? If so was it a hassle or simple enough to do?