Is there a difference between the trunk emblem and the header panel emblem for the first gen 68-69? I have 2 with separate numbers on the back of the "BY CHEVROLET" side. One emblem has PT. NO. 3916654 C-1, and the other emblem has 7752901 then a circle with something inside it and then a 2. I have seen both of these cast numbers surfing online but don't know much about them only to say the PT. NO. emblem says it's a 68-69 Camaro trunk/header panel emblem and nothing comes up on the other number. Weird, unless one of them is a reproduction?