They had an aftermarket unit installed previously...but it was and old outdated SDIN Alpine unit. He'd previously purchased this Pioneer AVH-X390BS touchscreen bluetooth unit and wanted to add a backup camera....so while I was in there swapping out the headunit, I installed a new EchoMaster universal backup camera tucked up nicely under the factory bumper, out of harm's way.
I also wired in the USB cable into the small pocket in the center dash area, for easy access to phone integration.