I have a 2008 GMC Sierra WT. It currently has an AM/FM/AUX/CD radio. I'm waiting on a new double din Pioneer to come in. I plan on adding a backup camera. Seeing how I have to replace my tailgate anyways, I thought about just getting a 2010ish unit with the factory camera in it. Is this doable? If so, what is needed? Just the tailgate & the wire from the tailgate to the front? Thanks in advance.