I have the stock stereo in a 2011 F250. I mainly would like to add a backup camera and have thought about doing this with a PIONEER AVIC-X920BT. I could also pick up a GPS, DVD, ect if I replace the stock unit. This could be a big plus. I would also need to purchase the camera for the backup. Would I get the backup image on the screen and will I have the distance lines like the stock backup camera.