let's just start by saying, this job is a bitch!!
first thing i do is remove the glovebox liner to access the heater box better.
next, unhook all the vacuum lines and the one cable. go to the engine bay and remove the a/c lines... you gotta discharge the a/c. Unbolt all the little bolts holding the retainer plate on and then take off the rubber gasket. There are about 2 more nuts that hold the heater box and the other small box on, unbolt both of these. once you have all that loose, unbolt the one vertical bolt on the inside that holds the box in and you should be able to wiggle it free. if you can't, you need to take out the center vent and then move the center box out of the way.
Charles Turner
MCA Gold Card Judge(64.5-65, 66)
'65 Fastback
'00 GT Conv, triple black
Check out my 65 [color:blue]fastback!</font color=blue>