hodgemom

I have inherited my dads 1979 subaru brat and would like to reinstall the ac system. The control inside the truck is there but everything under the hood was taken out. I have since reordered the compressor, radiator fan and condenser. I have no diagram of the ac system and dont know what else I need, besides the lines, brackets and the duct work for under the dash. If anyone can help with info, repair of shop manual or on missing parts it would be greatly appreciated. Thanks