........drain coolant and blow through the hoses to remove as much coolant from the heater core as possible. Lay down a plastic sheet (tape it up to behind heater box) with towels to catch any drips. Remove glovebox liner and maybe the door. I don't know how the ductwork is attached, hopefully to the base. Remove cover and go from there, Just Guessin' ;>}, Rod.
Mickey Thompson's 63 1/2 #997 S/S Hi-Rise 427 Lgt/Wgt Galaxie,
1957 C-600 Cab-over carhauler w/390-4V, 2-speed rear-end
FGCofA member #4908
MCGC member #75
"There will ALWAYS be an FE in my LiFE"