I promise the ps hose fitting on the Hemi will not match up with anything older. You may be a lot farther ahead to use the end from the Dakota and have the hose custom built.

I have a couple 91 Dakotas here, but I have no idea how one would identify what size the fitting is. I believe the fitting on the rack is a removable fitting, maybe it can be changed with something else? I'll look tomorrow if i get a chance. Gene