Christopher Runge on Instagram: "A look at the new @runge_cars 911-4 Engine with our proprietary 16V, 4 Cam top end. Developed in collaboration with @perfpow the first iteration is slated at 2.4L and will boast 300HP NA at 9200RPM. As we test and develop the engine our simulations show capabilities well over 11,000RPM reliably, but more on that later… #luftgekuhlt #rungecars #aircooled #flatfour"