Good info on RE swaps, my 83 has AC and although it blows cold it eats horsepower and gas and the compressor cuts out at idle so if you are at a red light or in traffic it starts pumping swamp gas into the cab, I used to rev the motor in traffic but people in Cali are weird and may shoot you for it. I am looking for an EFI donor truck to do a swap so keep it coming.
