. "Headquartered in the Allgau region of southern Germany in the town of Pfaffenhausen, Ruf Automobile has been doing the seemingly impossible for more than 30 years, that is, taking various Porsche models and make them even better. Alois Ruf's company was thrust into the world's automotive spotlight with the introduction of the Ruf BTR (\"Big Turbo Ruf\"). Based on a 1983 Porsche 911, this particular Ruf entry, produced from 1983 to 1993, boasted a turbocharged flat-6 built from a Porsche 911 Turbo's engine block, The 3-liter version produced a stout 325 HP while the slightly larger 3.4-liter unit that emerged in the later years pumped out an impressive 369 HP. Ruf BTR's propelled by the latter powerplant produced staggering acceleration numbers: zero to 62 mph in only 4.6 seconds, and a 1000 m dash in a mere 23 seconds. In a high-speed test hosted by an American car magazine in 1984, a Ruf BTR achieved a top speed of 181 mph, blowing away its adversaries to claim the title of world's fastest production car. But the BTR was a wolf in sheep's clothing: apart from the Ruf emblem on the nose and a slightly different front bumper/spoiler package, even the most astute auto enthusiast would be hard pressed to tell the difference visually between a stock Porsche 930 Turbo of the era from the Ruf supercar."@en . . "GT5 Transcripts/RUF BTR '86"@en . "Headquartered in the Allgau region of southern Germany in the town of Pfaffenhausen, Ruf Automobile has been doing the seemingly impossible for more than 30 years, that is, taking various Porsche models and make them even better. But the BTR was a wolf in sheep's clothing: apart from the Ruf emblem on the nose and a slightly different front bumper/spoiler package, even the most astute auto enthusiast would be hard pressed to tell the difference visually between a stock Porsche 930 Turbo of the era from the Ruf supercar."@en .