Since I have my Continental Kit sitting in the family room, getting it ready to sell, I took some measurements. I have no idea if these are "correct" placement, but this is what was on my 59 Baltic Blue convertible that Ray referenced and in the photo.
From the top of the tire cover to the "head" of the Tbird emblem is 8". From the bottom of the emblem to the centerline of the Thunderbird script is just slightly more than 3".
Hope this helps.