This pump is a direct replacement for 1957-61 Buick, 1957-61 Cadillac, 1955-61 Chevrolet, 1957-60 Oldsmobile and 1955-60 Pontiac. All of our pump assemblies are all new direct replacements, we have brackets and reservoirs made to match the original pumps so you can just install the new one in place of your old worn one and not have to worry about it fitting. Don't forget to check out our new hose sets and hydraulic top lift cylinders.