2 piston Lexus calipers work amost as good as the 4 piston brake calipers when using OEM pads and Drilled and Slotted rotors....Atleast they did on my SC400.... You may want to save some money and just buy some drilled and slotted rotors and new pads...Much better braking power over the stock flat rotors and cheap brake squeeking Pepboys pads......