A dream car for many since it first hit the road in 1975, Porsche’s first generation of 911 Turbo, known internally as the 930, quickly established itself a global performance benchmark.

With huge flared fenders and a whale-tail rear deck spoiler, it certainly looked the part as well, all while being instantly recognizable as both a Porsche and a 911.

One of the more compelling options available to 911 Turbo buyers was the M505 package, which transformed the car with the flachbau (or “flat-nose”).

This gave the 930 a sleek, 935-inspired look with lowered and louvered front fenders, pop-up headlamps, boxed rocker panels, and straked side cooling vents on the radically widened rear quarter panels.

This was a pricey, and thus, rare option available for Turbo Coupes, Cabriolets, and Targas.

Of these, Flachbau Turbo Targas are even rarer: Just nine M505 Turbo Targa Flachbaus were produced for 1989 (plus a single M506 Targa reportedly for the Middle Eastern market).

From 1987–1989 , a ...