Its the same post because the turbo is designed for both a caviler and a sunfire. They're basically the same car cosmetics aside. The engine is the same and the kit is designed for the 2.4 L Twin cam. However this kit is a generic kit and most all parts are interchangable with all makes and modelss pending on the manifold and downpipe. As for the car I owned, it was titled a sinfire but I stripped the body and made my own. I posted on both pages to catch the interest of both car owners.