BigVIPness

Hey all, I was wondering if someone can help me out. I'm looking for vertical flags. Like the ones that would hang in a dealership or shop. 3' wide by 5' long, you know like a vertical banner. I've searched all over the internet and i'm about to give up, this is the last hope I have. I'm looking for an Audi flag and a Porsche flag. Ebay and Yahoo turned up nothing. Does anyone know a special place I could get one of these at?