At the time of its release, the Porsche 959 was the fastest production car on the road. The progressive 959 trumpeted a top speed of 197 mph and could scoot to 60 mph in 3.6 seconds. Limited to 345 examples, including eight built from a surplus of parts, the 959 would become the first modern Porsche supercar, later succeeded by the Carrera GT and 918 Spyder.
Out of the total run of 959s constructed between the eighties and early nineties, 37 were a combination of prototypes and pre-production models. The 959 prototype you are viewing here, of which Porsche built only 12, belongs to the F-Series group of early development cars. In the 959 production timeline, F-Series prototypes came before the V-Series pre-production models and the nearer-production N-Series pilot vehicles.
This F-Series example is one of two painted Ruby Red and the seventh prototype produced, making it the “F7.” Whereas the F7 featured more recognizable Porsche 959 design elements, the F2, also finished in Ruby Red, lacked air intakes in the rear arches due to earlier body specifications. Compared to production 959s, a list of items this prototype does not have include power steering, adjustable ride height control, a right-hand side mirror, and white magnesium wheels. For the full story, check out this article from Motor Trend.