After removing the glove box, I do see the pod, waaaaaay back there, and I can see that there is a three way junction that attaches DIRECTLY to it, and I believe that the vacuum cable going down is from the controller and the vacuum cable going up is to the defroster.
The issue, as Larry said, is getting to it. Even testing the vacuum lines, I'm afraid I couldn't get hem back on if I took them off the pod.
I suppose I might as well go all the way and take off the dash to test and replace all the pods I can see/get to, although that will be during the summer when I'm out of school (I'm a high school student).

Anyone know of a good guide for this? I will be googling it, but all the guides I have seen so far have been for different chassis.