All of them will fit, but you have to match your headlight shape too (or change them to match).
So Clubby Calais and Berlina will interchange on same headlights.
Exec S SS Acclaim Lumina etc will interchange on same headlights.
To go SS to clubby you would change bumper AND headlights.
Commodore bumpers and lights are both super easy to change. They woke up one morning designing the VT and said "lets make it so an 8 year old can do it without needing help".