...after being sandblasted, primed, colored and clear-coated. It's a '71 Schwinn Super Sport that I am "re-purposing" with lighter and (sometimes) newer parts.

Here's my decal dilemma:
I did not use water transfer decals under the clear-coat because of a recommendation. Now, I have to decide whether to use vinyl or the water transfer type on top of the clear-coat. I'd rather use water transfer but worry they will scratch easily without being protected by a layer or three of clear-coat.

I see the water transfer type on ebay, but do not see vinyl.
Who would be the source for vintage vinyl decals?

Thanks for any help you can give me with this renovation stage!