The pics I posted are the ones that should be installed on your 230e. If you look underneath the car, you will see the bars, one in the front and one in the rear. A lot of japenese cars don't have them. I don't think a Sunny which is known as a Sentra in North America would have them either.

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz