Another driver backed into my beloved 2008 Aero SC on Thursday, and damaged the RR door, quarter panel, and bumper. Initial damage estimate is $6,400! The other driver's insurance has accepted liability. Whew! Appears I need (at minimum) door or door skin, and quarter panel. Does any one know whether these are available and how hard they are to obtain? Is it possible that other GM parts (Malibu, G6, Cobalt) would fit?