I am confused

I had the same problem. Went to the wreaking yard and found the pulleys off a 75 Dodge PU. Has a single groove water pump and a double crank pulley. The fan belt run's the altentator and the power steering runs off the crank. I picked up some pulley's from a big block but nothing line up. I also put the power steering brackets and altenator brackets on from the same truck. Good luck.