These lamps are originally for newer car models 1990- but by using this kit including adapter cable it can be mounted on model year 1983-89 with a small modification.
When changing to the newer tail lights you will need to modify a little. To mount the 1990- tail lights on model year 83-89 you will need the adapter cables (included in kit) and you need to remove a sheet metal in the tail light opening before installation. This is to accommodate the bulb holder but this operation is not visible after assembly