RB26DETT twin-turbo I6 , 332 PS (244 kW, 392 Nm) (advertised as 280) [ 17 ] GT-R V-Spec - Additional aero parts, brake ventilation ducts, diffuser . GT-R V-Spec II - As above + carbon fibre bonnet with NACA duct . GT-R N1 - Blueprinted N1 motor, no A/C, no stereo,