“If any one model of the Porsche 911 comes to mind of the proverbial man-in-the-street, then it is an image of a black Turbo, crouched low on wide wheels, clothed with big wing extensions.

The Turbo conjures up fantasies of raw power and elegance, of high automotive technology and style.

In 1974, in post-oil-crisis Europe, it was a bold and courageous statement of defiance about the future that delighted the automotive industry and Porsche’s customers alike.” – Porsche 911 Collectors Originality Guide by Peter Morgan It was inevitable, following the success of the Porsche Turbo, that in due time Porsche offered an open-top car.

Porschephiles celebrated in 1986 with the introduction of the ‘Turbo Cab’, as it quickly became known.

And, even more worth the wait, 1989 models included the long-rumoured G50 five-speed manual transmission in replacement of the former four-speed used since the 1974 introduction.

While the new transmission made little difference in acceleration, it made th...