A power steering box and a power steering pump, plus the hoses and all the fun brackets that mount the pump to the engine. Your best bet would to find a donor car with all the parts on it. Bob
Steering box with arm, P/S pump for the short water pump sbc if it's a sbc. You also need the proper pulleys with extra groove. Pressure hose and return line. On the pump, Chevy trucks still used the short pump through 72, if you can't find a car pump with proper brackets.
A donor car,...so you get all the misc. bits n pieces, as well as noting exactly where they go. 4TTRUK