Hi! I bought a 1948 model 66 and it came partly disassembled. I got 5 different grille pieces with it, two for one side, three for the other. They each have seven horizontal slits in them. Other than being either left or right hand side they are identical mechanically. I tried to fit a couple on the nose cone of the tractor and it seemed they weren"t lining up correctly. I also received some other parts with this machine which evidently go to a larger 6-cylinder Oliver. Is there any way for me to tell for sure these grills go to a 66? What other models would they fit? Were 66 grills interchangeable with any other models? I"m looking to sell the extras.