Hemi Cuda badges for shaker hoods have three attaching legs or "studs". Rally hood engine badges only have two "studs". All engine badges for Cuda's with rally hoods mount the same.
Aussiemark is correct, all Hemi Cuda's had Shaker hoods only.
I used my original Cuda 440-6 rally hood badges on my Shaker when I installed my Shaker hood in 1988 as the badge covered the middle hole in the Shaker bubble.
You will have to drill another hole in the hood scoop area, or grind off one of the mounting legs to mount the badge on a rally hood.