I'm looking to replace the power steering box on my 73 duster with one rebuilt from a local parts supplier ,on my 78 aspen rt it had a very tight box with good road feel not like my duster, I looked up the rebuilder part # and they use the same part number for both boxes, so is there something else I'm missing, I want to get more road feel with out the high cost of a special box. do I need to switch ps pump also? to get that tight feel?