I think the 1955 Elto was only 22.5 HP, and would use a different deck-el style. You probably need a decal for a 1956 or later model.
This was my motor, it is a 1955 model, but I scored the side appliques off a 1956-57 model, since the original ones for the 55 were missing or broken.
I still have leftovers of the orange decals that I had reproduced in vinyl.
Best,
PM T2
He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...