The parts Look period correct, They are real original parts . That’s a zender wing
that car you posted has parts from various Tuners brabus Zender AMG . Remember back in the day someone could order any combination of parts they wanted . If they prefer the zender body kit with brabus gauges and a amg wheel they could buy all of it and have it installed .
But my guess is the parts were probably added later in life by someone just putting together a car with used/junkyard parts , because It’s very unusual someone would do that Originally