I’ve used Velocals. It’s OK for what they have in stock. I’ve also used https://www.stickylife.com to recreate decals that I was unable to find elsewhere. The problem with Velocals…if they don’t have what you need, they aren’t much interested in creating them for you. They say they are on their website, but in practice not so much. I provided them with photos of the original decals on the bike I was looking for (in anticipation of a restoration project). But their response was something along the lines of “We don’t see a big demand for that decal. But we have others you might be interested in.”

Dan