4. 9FF GT9-R
Speed – 257 MPH
The engine placement and performance is the only real difference between the Porsche 911 and the 9ff GT9 – R. The GT9-R is anything but a mass-produced vehicle as it is designed and built for the devotees of special motor cars. It is a 2-seater super sports car with mid-engine construction. This supercar has 6-cylinder boxer engine with bi-turbo charging. The
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