In the process of this now. The dash does have to come out. Two tricks:
1. Follow the metal support rail on the lower dash, and unbolt that.
2. The 4 bolts that hold the internal steering column must come off, and the column pulled free. You can let the steering wheel rest on the seat.
You do not have to remove the gauges or the stereo... though I did cause I am pretty sure they would get scratched.
The dash does not need to come completely out, just swing it out into the passenger seat.
For the Air box (AC) most of the damn bolts to free it are in the engine well. The first two are on the firewall just behing the engine (distributor). Might be a total of 6-8, plus one on the inside above and to the left of the blower motor (on top of the air box).
I will follow up when I am further along; for anyone else that tackles this. I can see why the AC place wanted 1000.00 plus. It is kind of a pain in the ass, but not enough for me to pay someone to do it