Need pics of stock '64 225 carb/kickdown linkage.
The "CHARGER 225" (Dodge) and "SUPER 225" (Plymouth) air cleaner decals were factory-applied in '63-'69.
The yellow/red decal you're talking about is the "MOPAR" (US) or "CHRYCO" (Canada) air cleaner service instructions. They look like the third decal from the top in
this post, with variation in part numbers.
The '62-only, 170-only (doesn't fit on a 225 and still let the hood close) air cleaner is also discussed in
this thread.