Are you looking for the Formula stickers font by chance, or other decal font ?
Just the other day I contacted a company, www.SignSpecialist.com,
they helped me find the font
for the Formula stickers, they used https://www.fontsquirrel.com/matcherator
to look for the font
I highly recommend Sign Specialist if your in the market for stickers / decals, easy to work with and great prices also !
Here's what I ordered for my TDI Fiero.