Pulled apart the dash to diagnose a HVAC issue on my 03 KJ and found that the heater blend door broke and also cracked the upper half of the heater box housing as well. I am having some difficulty locating the part numbers I need to make the repair. It seems like the blend door is not listed for purchase separately, but I cannot tell what part it comes with. I *think* these are the two parts I need. Can someone help me out?

5066532AB Lower Housing
5066501AA Upper Housing