What about the steering knuckles, do I have to replace them also or just the hubs? I'm asking because the caliper fixes to the knuckle and if the holes don't match than I have a new problem.. If it's just the hubs and if they are really that cheap (https://www.rockauto.com/en/catalog/lexus,2007,is350,3.5l+v6,1434544,brake+&+wheel+hub,wheel+bearing+&+hub+assembly,1636) than it's a nobrainer, I'm definitely doing it. And the 17" will definitely clear the 350s rotors and calipers?