Generally, most people end up focusing too much on the "compressor wheel" since that is what we can typically see. However 90% of the "turbo magic" comes from the turbine side of the turbo, which is where KC Turbos has done their due diligence to make this the best option on the market. No other drop-in 7.3L turbo on the market runs a larger shaft. They have increased the thickness of the shaft from 6.4mm to a whopping 7.5mm in order to support the extra power, which helps make KC Turbos even more robust. Modelled after the 366SXE compressor wheel, the KC Turbos Compressor Wheel has the same profile, shape, and blade style, however, it utilizes a Larger 7x7 wheel and is reverse rotation. This wheel is not only bigger but much stronger!