Hey, I have a 1976 f100 custom...obviously no power steering. I have a 351w in it from an 82 bronco. The engine has a mount for a power steering pump. How hard/pricey would it be to put in power steering?
You would need the steering column, gearbox, pump, idler arm, high pressure line and return line with cooler for a power steering setup. Depending on the wrecking yards in your area, you might be able to find the parts there on a truck with factory setup. You would need the correct pump bracket for the 351W.
I converted a 74 F100 many moons ago for ~$200. No idea what the cost may be now.