Im currently building a 521 for my 1972 mustang mach 1. The car had a 351 and power steering from the factory, i do not wish to have power steering on my new set up. What are my options? Can i just not put a pump on it and manually steer it? Would that hurt anything? or do I need to convert to a rack and pinion steering assembly? Is there a donor vehicle that I could get parts from other than another mach 1?