Anyone know where I can get some info on putting a touch screen in my dash in my 2002 Chevy Blazer? Where my radio is its like 4" tall and 7 1/4" high. I have no idea how to even begin putting this screen in there or what screen would even fit. Could someone help point me in the right direction? Anyone know what size screen I should get? Help meeeeeeeeeeeeeeeeeeee