gx-470owner

Hi, My lexus dealer told to replace the front and back rotors and brake pads for my 2004 Lexus GX 470, the quote i got is $1600 for parts and labor. I found online the OEM parts for $640 and installation by local mechanic for $200. I am wondering if i use the Power Stop K2422 Front/Rear Rotor + Brake pad kits (which are for $341). Just wondering how good are those parts. Does anybody used these? Any feedback is greatly appreciated. Thanks RK