Here are some more mystery parts that I need help with. Actually, I have 3 of these pieces - the two that are pictured and 1 curved the opposite way. They are 9/16 wide and 26 inches long. The profile is interesting - like a channel that something goes into. Any ideas?

Drip rail moldings????

That appears to be moulding for the '36 Chev pasenger car.
'37 car & truck has a slightly different curve.

Would say grill edge trim 37 Chev.

I think Joneses is correct..check out E-bay item 260936553819...Billu38

Just send me all those parts and I will identify for sure.