Porsche Museum: The Road Cars Published on October 20, 2017 in Galleries by Michel Deslauriers Photo: Michel Deslauriers 1969 Porsche 914/8. One of two units built. This was offered to Ferry Porsche for his 60th birthday. Engine: horizontally opposed eight cylinder Displacement: 2997 cc Output: 300 hp (221 kW) Top speed: 250 km/h