Great project! I know many here don't approve of using vinyl for graphics, but as I look at the b&w pic, it occurs to me that if I couldn't get a decal made of the number, I would make a cardboard template, and cut it out of vinyl. I have several colors, all from Hobbytown, and is available in sheets about 6" x 36". After it is applied, run an extra fine Sharpie black marker around the edge of the vinyl... practice on a scrap piece first. The vinyl is not as thick as would be expected. Just a thought.