The Audi Sport Quattro is back . . . sort of. This is the HSR Manufaktur Type 859, a 500-plus horsepower fire-breathing restomod of Audi's iconic 1984 rally fighter. HSR's version uses carbon fiber panels, shortens the body, lengthens the wheelbase, and slots a modern Audi 2.5-liter five-cylinder longitudinally into the engine bay.HSR is only building 84 examples—as a nod to the original's title-winning year—with pricing starting at $570,822 at current exchange rates.