I have a numbers matching 1971 chevelle SS (454). I have two questions, first, did 71SS come with fiberglass or metal inner fender walls? Second, my chevelle has the SS hood, what type air cleaner should I have with that? The air cleaner on my chevelle right now has a chrome lid with the sticker 454 365HP. The base is black and it has dual inlets and one of the inlets has flex tube on it that runs to the exhaust manifold. I haven't seen this air cleaner in any catalog, just want to make sure it's the right one!! Thanks!