As the second wave of the Skyline’s resurgent 1990s GT-Rs, the “R33” era was particularly good for Nissan. Many revisions were made to the older car that increase reliability and performance, and the V-Spec incorporated even further refinements with the addition of ATTESA ET-S Pro, an all-wheel drive system with a new active rear limited slip differential that was able to transfer torque from side to side, for even more precise traction control. In translation, this means that the V-Spec models are faster and grippier at the limits and in poor traction situations, like rain, snow, or gravel. The 2.6-liter twin-turbocharged inline six, the RB26DETT, carries over relatively unchanged, although certain parts were strengthened against failure. With the V-Spec package comes larger brakes and wheels, and as the highest-spec GT-R on offer (at least until the N1 version came out), Nissan used this model as the basis for their Group N racers.