Its more just the fact grabbing a stock skyline and a stock silvia and trying to drift both its very hard in the skyline compared to the silvia due to size, weight and lock. But on the other hand once you set up a skyline and silvia they will perform as well as each other along with the fact that the r33 gtst now is so cheap under 6k which gives you a strong engine gearbox package compared to the s chassis so all you have to worry about is setting up the dymanic side of the car which is why in victoria you are seeing alot of r33 drift cars over the past couple of years.