The arrival of the BTR in 1984 marked the beginning of RUF’s global reputation as an independent car manufacturer, establishing it as the most highly regarded of Porsche tuning firms.

Inspired by the FIA Group B regulations, the BTR used the Porsche G-Series 930 Turbo body as the basis of a 374-horsepower, 187-mph sports car.

Tested against the top contemporary models from Ferrari, Lamborghini, and Porsche by Road & Track in its September 1984 issue, it proved to be the world’s fastest car at that time.

If you were in the market for a truly unique “G-body” Porsche capable of supercar-killing performance, RUF was the company to call.

While RUF was able to provide BTR upgrades to an owner’s vehicle, it also provided complete cars hand-built from “body in white” shells obtained from Porsche, which received their own unique “W09” RUF chassis numbers.

While RUF converted many customer Porsches, only a handful of these W09 BTR models, in both narrow-body and Turbo-body configuration, we...