I have a 03 f250 lariat xlt. Im looking for a for a factory head unit for my truck that has a aux port. I have a oe head unit now and would like a aux port. But I dont want an after market player. Does anyone know how new I can go or if there was a head unit made for my truck with an aux port. Or even where I can find info as to how new of a oe head unit I can install with the factory wiring harnesss