If stock nuts can still use then just don't change because usually those cheaper aftermarket ones are not as strong/durable especially to withstand repeated abuse from impact wrench. Only change them if you really cannot use anymore due to smaller holes from your sport rims (for example original Volk Racing rims). Even if you need to change them, use the steel type so at least can handle the impact wrench. Don't use those fancy aluminum lightweight ones if they're fakes (which mostly they are because the original ones are damn expensive!).