There were two different racks used in the stock application. One was made by Ford and the other was a TRW rack. They had different size fittings and my guess is that you're new rack (if your original was a Ford) is a TRW. Tje way to tell which you have is easy. The ford unit is all aluminum. The TRW unit is 2 pieces, steel on the passenger side and aluminum on the drivers side. All you need is a magnet to tell.
There are some aftermarket manufacturers who make specialty hoses that will fit these once you know which one you have.