Well I wanted to pick the 718 RSK Porsche (1.7L twin cam 170 HP in 1959!!!!!) but...it's too early!!!! So I will have to go with the 1967 911R, Porsche's first factory prepped lightweight production (albeit limited) race car. This car paved the way for the gentleman racers car of choice the GT3 Cup cars, RS's, RSR's and many many more!!
