The bottom ones are 45" long, the center ones are 49 1/2" long and the top three are 32" long. No markings. I included a picture of the clips for the top ones to see if that would help.
I was thinking from the end so we could see the "roundness or reveal" if any. Are they flatter in the center, oval, or 1/2 round? One almost looks like it has a crease in the center and not as round as the others.
Yes. The piece with the crease almost looks to be a center hood trim. The rest sort of have that 1946-48 Plymouth fender trim look to them.