http://www.heatertreater.net/ <---- My pops came across these guys when his avac started messing up. saved him a TON of money, took me about 6-8hrs of work and they have great parts/instructions (first hand experience).

I don't normally brag about a company, but his trucks' an 03 and mine's an 06 so i know it's coming soon lol.

Figured i'd maybe help some ppl out that don't mind a little DIY and bloody knuckles.

 

I had to rip out the dash on my Grand Cherokee back in '07 for the blend doors, took me two days to pull it apart and put it back together. They have the Heater Treater for the GC and it goes in behind the glove box, about an hour install. Only downside is if you have dual climate control, you lose that as both sides are controlled by the driver's side ****.

Mopar actually has a kit now, installs the same way, uses aluminum door instead of plastic, retains dual climate control and is actually cheaper than the HeaterTreater...

 

heater treaters are metal also. but either way. whatever makes life easier. tearin the whole dash out is a PITA.. sometimes i really want to smack engineers