Like its closed coupe brother, the N400 Roadster features an upgraded version of the Vantage V8’s 4.3L engine producing 400 HP and 309 lb-ft of torque.  I’m sure the models will flock to the car, so there is not one included with it.That’s a full 20 horsepower more than what’s included in a standard Vantage V8 thanks to a thorough overhaul of the engine’s internal components and the addition of a freer flowing exhaust and air intake. Other N400 enhancements include a Sport Pack that dials down the suspension for sharper handling, as well as new side sills, trunk lid, clear rear lamp lenses, mesh for the side strakes and a “bright finish grille”.