A:AnswerYes the stereo will work with your factory amplifier simply connect the blue and white wire on the head unit to your amplifiers remote power wire. Once you do this if you hear a loud pop sound every time you turn on your stereo you will need to purchase a 5 volt Voltage drop wire accessory to your harness In line with the blue and white wire and your remote power to your amp.
A:AnswerI did not go with the GPS model because Google Maps is the best and most accurate, in my opinion. This does however have a folder to have apps. I am very happy with this model(without GPS).
A:AnswerYes it will fit in a F150, that's what I have . I also had this unit installed in a 15' Dodge 3500. The backup camera is only about $90 and I believe they charged me $30 for the install of the backup camera to the unit.
A:AnswerThis unit is designed to be installed in vehicles with a double DIN installation site. Please refer to your vehicle manual for confirmation of the type you require.
A:AnswerYes it will fit in a silverado. The steering wheel controls will work with this unit. There is a wiring adapter that goes to your steering wheel for newer vehicles. I am happy with my purchase and Best Buy install.