I think I found a fix for the Head Unit / HVAC snapping and Cracking.
Lustinator is correct that the noise comes from the gaps between the dash and the center console area. Before I tried spraying lube in those cracks, I figured I would try this:
I cut up a business card and folded it up a few times, and wedged it between the front gap between the dash and center console (Deep into the gap) I had to wedge it in there with a plastic pry bar. Since then it hasn't snapped or cracked.
Since this looks like crap, I am working on a better solution.
What I did was get a large black plastic zip tie, pried open the gap and stuck it in there. Then I cut off the end that is sticking out so you couldn't see it, but left enough hanging out of the front so it doesn't fall in.
So far, this has been working for me. Now to tackle all of the other rattles!