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In page Porsche 928:

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Fuhrmann's replacement, Peter Schutz, decided that the models should be sold side by side, feeling that the 911 still had potential in the company's line-up.[3] Legislation against rear-engined vehicles did not materialize. Although it never sold in the numbers Fuhrmann envisioned, the 928 developed an avid following and had an 18-year production run.