Magnum swapping the 72 Scamp!

That is one nice looking Scamp! I love it. I got a '75 318 Scamp Brougham & I'm interested in where you got the 318 4-bbl decal for your air cleaner? I have not seen that one with 4-bbl in the middle. I've cleaned up and painted an old 340 air cleaner for mine, and I would love to put that decal on it!
Thanks in advance,
Woody