I was going to document the Hydroboost install, but I didn't get all of the pictures. Here's what I have anyway. If anyone is trying to figure out if they want to do this, hopefully this will give a better sense of what is involved.
Start by removing the master cylinder from the booster (2 nuts from booster) and strapping it up to something to avoid spilling fluid or bending the lines.
Remove the booster from the firewall (4 nuts on studs in the firewall)
Now is the time to paint the firewall if you're going to since the hydroboost has a different mounting footprint than the vacuum booster.