1968 Barracuda deck lid trim

Ok got a question. I just purchased a stash of parts and there are two pieces of decklid trim. The guy told me they were from his 68 fastback cuda which I definitely agree. He says that it is the upper and lower, but I disagree. Both pieces look identical, so I don't think its a upper and lower. I believe they are both upper, my buddy says they are both lower. So how can you identify the trim to see if its upper or lower? I am going to sell these. So I need to know what I'm selling before I sell them. Thanks Kevin.