Carburetor Rebuild Kit, 1957-58 Oldsmobile V8 with Rochester 2V and J-2 option Carburetor rebuild kit for 1957-58 8 cylinder Oldsmobiles equipped with a Rochester two barrel carb, including all J-2 cars. Sold each; order three kits for J-2 applications. Kit does not include carburetor base gasket or float. Please note that carb kits are not returnable if opened.