The entire dash has to come out, the whoooole thing, and the dash harness swapped from the donor car. It's a bit of an ordeal.
Hence the reason I am out. If I had another reason to pull the dash I would probably do this. This is a 2004 LX I really don't expect to have the car more than 3 years anyway. I was hoping the HVAC change would be plug and play. Oh well!