Putting in power steering to strong arm steering

[truckin 79]

My dad recently gave me his truck and it came with no power steering. So I know I need steering box and power steering plus brackets. It also seems like I need crank pulley and water pump pulley. Anything else I need? Will the parts have to be from a 79 truck? My dads truck came with weird options like th400 transmission, 8 leaf rear springs, cruise control and of course no power steering. Oh it is 79 1/2 ton short bed with a 350