My friend's F7P is approx 380 HP / 450 Nm (turbo'd F7P, Wössner pistons, rods, E85, MS1 etc) He won the Hungarian National Drag Championship AS3 (2010) and AS7 (2011) categories, best 1/4 mile time: 11.88s @ 197.5 kph. There was no problem with the bottom end so far. IIRC he used stock b/e with Renault rods and Wössner pistons in the Stage 1, this time the car produced approx 280 HP.