Good write-up! I have two things to add tho:

1) if your truck has an aluminum master cylinder with a plastic reservoir, its bolt holeswill not line up with the studs on the hydroboost - you will need to take a small die-grinder to them and elongate them a bit towards the outside, we're talking about 1/16" each so nothing gets weakened by this procedure.

2) on certain trucks (IIRC the '92-'96) the hydrobost will bolt up to the firewall, but the linkage rod that connects it to the pedal will sit a very steep angle, which may actually bind the linkage. Solution to this would be grab the hydroboost-specific brake pedal, or simply grind the pin off your factory pedal and weld it a bit higher on the pedal.