That cover is right for 70 and up 350 cars. 69 and older have the ridges running up and down with a big space in the center where the decal would go. edit, found a pic. They'll look similar to these.
I have found the chrome cover and the valve cover decal @ the parts place But i dont quite understand as they say they have a decal for the air cleaner cover also for a 68 gs Is it just personal choice? Im going to go with the chrome cover and the decal for the valve cover Hope this is the correct way Thanks for all the help everyone What a great site