1967 GMC power steering conversion

[sduckworth13]

I have a 1967 GMC 3/4 ton with 8 lug drum brakes, non power assisted brakes, and manual steering. I'm swapping the complete 5 lug disc/ drum suspension minus the crossmember and leaf springs from a 1974 Chevy 1/2 ton truck. I also have the power steering gear box from the 1974 Chevy 1/2 ton truck. I have the frame dimple worked out already.
My question is, do I use the 1974 Chevy 1/2 ton PS pump, hoses, and ps engine mounting bracket. Can I use the ps engine mounting bracket from a 1974 Chevy truck without modifying it and without modifying my set up which is the alternator on the left side. I believe I need a three groove pulley from a big block, not real sure on that part either.
Thanks,
Scott