i ran into replacing both the high/low pressure lines a few years ago. because of the dealer cost, i had an oldschool autorepair place make new hydraulic lines for about $80. they cut and reused the OEM lines at each end (at least on the high pressure line), brazed on standard fittings, and then used std hydraulic hose to run between the two. if i recall, the end fittings (bango and ?) were reused to keep things simple, quick, and foolproof.
tom

95 T100 SR5 Xcab 4X4