dang_ol

i am wanting to put ac in my 85 toyota pickup, when i bought it, it did not have anything under the hood for the ac system but everything was still under dash for it.

what all do i need? compressor, dryer and evaporator core. any thing else?
what do i need to do to hook it up, i assume i will have to make a braket for the compressor, but do i use the pulley it comes with or do i need to find a om617 pulley?

thanks for any help.
matt