Done! Thanks for the validation guys. Quick write-up... this is for a 2000 model (not 1990 like I said in my original post!):
Remove brake lines from master cylinder (I drained mine first with a vacuum pump to avoid mess) - 12mm (preferably line) wrench
Remove two 13mm fasteners that secure the line support bracket to the front of the master cylinder
Slide the line support bracket off of the bolts that hold the master cylinder so you can get a box end (13mm) wrench on the fasteners that secure the master cylinder. I think this is important, I tried to use an open end wrench and damaged one of the nuts.
Remove master cylinder
From inside the cab under the dash - remove the four 14mm fasteners that secure the booster to the firewall
Remove the clip that secures the booster to the brake pedal
The booster should be free at this point
Installation is basically the reverse. The only hiccup I had was that my brake light switch was about 1/4 inch from the brake pedal when all was finished. (so the brake lights stayed on) Turns out the switch "auto-adjusts" so I just needed to pull the switch plunger out some.
Working great, thanks again!