After a month of working until 2 or 3 nearly every morning, I have AC in my '56.
I started by installing a radiator mount in the 6 cylinder position to get clearance for an electric fan. Yes they mount in different locations. The 6 trucks had it mounted about 4" forward of where it mounts on an 8 truck. I bet you also didn't know that a mount from a 2-ton will fit in the half ton. The front fenders are held on by this mount so I had to cut the fender mount parts off my old piece and use them.
I used a Cooling Components fan and a Centec electronic controller. I'm happy with both.
I already had a rebuilt compressor and new condenser that came with the truck but weren't mounted. There was an evaporator unit in the truck but the ports have been open for who knows how long so I trashed it and bought an evaporator kit from Hotrod Air. I bought compressor mounts and an exhaust manifold to match from a local wrecking yard. I also used a hose kit from Hotrod air and had the ends crimped at my local NAPA outlet.
I charged it last night and took it for a cool test drive.
