Steel adapter kit for installing a late-model GM power-steering box while retaining early-style hoses with 5/8-18 female inverted-flare ends. Made in the USA and zinc-plated, the kit includes one 16mm-1.5 O-ring male to 5/8-18 female inverted-flare adapter for the return side, and one 18mm-1.5 O-ring male to 5/8-18 female inverted-flare adapter for the pressure side. Each adapter is equipped with a Viton O-ring for reliable sealing, providing a clean and practical solution when mixing early hoses with later GM steering boxes.