by the mid-1980s, Willy Koenig, who had previously made a name for himself for his extreme Ferrari conversions, decided to do what… pretty much every other tuner back then did - touch up a Porsche 911.
of course, Koenig being Koenig, little to no parts were left in original state - just the roof and the frunk, with the rest of the body being completely unrecognizable from the base model thanks to a very wide fiberglass bodykit.
you could also have the 3.3 from the base Turbo increased to 3.4 litres and installed with a MASSIVE turbocharger, bringing the power to 550hp - because, well, this is Koenig.
the Road Runner nickname was spot-on, as the modded 911 could do the 0-100kph sprint in just 4.4s and accelerate up to 308km/h… theoretically, as no one was brave enough to try.
again, another inspiration from 1000sel.com