[mrhino]

decided now would be as good time as any to replace the the old heater box with a A/C unit from a donor truck. Call me dumb, But to my surprise it was not just a bolt in replacement. I honestly figured all the firewalls were the same coming down the assembly line. I had to cut the firewall on the evaporator side . Also needed to drill new hole for the heater box. but other than that it wasn't to hard. when I stripped the donor truck I was careful to take all the wiring, cables, and vacum lines on the control unit, so it made the transferring everything very easy. now just need to get a condenser mounted in and get the compressor mounted when I rebuild the engine and install that.