all 9005's you would have to do the conversion to. and i've seen piaa's and silverstars right next to each other. the silverstars are much brighter. the only reason the piaa's have such a nice blue color is because the bulb glass is a dark blue. this dark blue glass also tends to filter out the rest of the color spectrum, which constitutes most of the light. end the end, you have paid more for less light.