Time to start putting the A/C together. Pulled a fully working system from a '98 parts truck. Lesson one, don't assume a working system needs no attention! Evaporator is almost completely clogged with crud.
Soaked the evaporator core in a cleanser and rinsed it thoroughly, should work MUCH better now.
Wiped out all the insides of the ductwork box and cleaned the blower motor, too. Retrieved from the ductwork box along with the leaves and debris: a Bic pen's guts, 4 pennies, a wood screw, several .22 casings, and a straw wrapper.
Ductwork box bolted onto the firewall, harness and controls installed. Put it through the paces to be sure all the actuator motors did what they were supposed to do, and fan blows on all speeds.
Everything is working great; now just need to pick up a new accumulator, O-rings, and orifice tube so I can move on to assembling the system under the hood.
Richard