Re: Blend Door Kit: What vendor to use?
Did you already check if the blend door is broken? You can access the passengers side blend door actuator when removing the glove box. Remove the actuator and rotate the shaft to see if its really broken.
If it is, you first have to decide if you want to continue with the dual heat system, or if a single heat system is sufficient.
I have no experience on this repair nor on the brands who make the repair kits, so probably some other member can tell you more.