clocksprings are 97-01, buttons and apparently steering wheels or steering wheel covers aren't. Clocksprings only depend on speed control vs no speed control, the non speed control unit was part number 5600 9070 and was used 97-00, the speed control unit was part number 5600 9071 and was used 97-01 (far as I can tell, they didn't offer 01s without speed control, at least that's what the parts catalog says.)