The strips and N numbers are just vinyl so they come right off. Happily, I found that they scribed an ink line down the side to align their graphics. I used the same line to place my stripe. On one side there was also a vertical line that would have shown so I had to take it off. I found that citrus cleaner worked well, then when I prepped the surface with windex prior to applying the stripe I saw more of the remaining line disappearing. So, it comes off easily.