Trying to cover rusted fender wells on my 2010 Sub LTZ. All the fender flares I can find said they don't work on the LTZ's. I called Chevy and they said the rear bumper covers for LT, LS and LTZ's are the same. So I bought a set of LT/LS flares and sure enough they do not fit around my rear bumper cover. Chevy said they do not show them to even sell them to me. I can't find them used. Anyone have any ideas? Thanks!!