i didnt have that choice since all electricals and cables and fluids / vac lines were still hooked and manifolds were kinda in there place. starting the bolts were easy just getting tools on them past finger tight, and having the half step washers correctly aligned blind by feel.... such a silly design to have the intake flange thicker than that exhaust flange, but have one bolt hold the two on to the head, in 9 places...
i billed 3 hours for cleaning of head/ surfaces, install, torque, power steering pump install, and oil filter/oil change