Where can I find a batwing air cleaner for a 1958 cadillac sedan deville?

[Kristin]

I want to get my dad a batwing air cleaner for my dad's 1958 cadillac sedan deville, but can't seem to find the right one online. Does anyone know of any websites to try? It doesn't matter if its original or a repro. also, does anyone know of a car that it might fit on as well? maybe an old GM? if you don't know anything about cars, please don't waste my, or anyone else's, time and don't comment. Thanks!