Do I need to relocate alternator to add PS?

[Syco67]

My sister has left her 69 GMC 3/4 2wd in my care while she is on the road. She just spent $1700 on some new 17x10 or maybe 17x8 wheels and tires, not sure which, but they are a lot wider than the ones they replaced, she also just put in a small grant steering wheel. It's a manual steer truck, so now it is impossible to turn if the truck isn't moving. I would like to add Power steering for her, will the alternator need to be put on the other side of the motor to make room for the pump? I was also thinking of getting most of the parts new, pump, hoses, gear box. Other than the bracket, is there anything else I might need to do this swap that I can't get from a parts store.