Here is what "Brush Script Std" looks like from "Font Zone". Be careful not to download from an unsafe site. The file name is BrushScriptStd.otf. It is an Open Type Font. Copy to your Windows/Font folder (if using Windows). Anything that uses the files in the Windows/Font folder will be able to access the added font. I typed in the text in Windows Wordpad. Selected yellow characters with gray background. I resized and cut-n-paste into Windows Paint (old version). What I did is very basic stuff. A business that makes signs, decals and stencils will have the capability to make a more accurate job.
I am looking at the zero of the "105" on the valve cover in your pic, and it looks like that script on the actual valve cover was applied by spraying yellow paint through a stencil. I am basing this on the breaks in the yellow paint of the zero. The rest of the script on the valve cover is pretty blurry and faded to see other breaks which would indicate that it was applied through a stencil.
Not that it matters to sane people, but some of the rest of "us" are curious about how the script was applied.
