5 lugs knuckles differs from front to back. Front we normally use the Lantis knuckles, and the back use 210 knuckles. Front 210 knuckles cannot use because of the tie rod location is different. I used 5 lugs knuckles before. By changing the knuckles only, i can feel more response in my braking system. But now im using 4 pot Mazda Savanah with RB2? rotors. Endless pads. Wohoo... super nice...