Is that Duplicolor vinal paint? If so I have used it and I should last you for quite a while, I painted my vinal top with it when I was in high school and it lasted a good year or so before it started looking bad, that stuff sure does dry fast. Just a bit of wisdom for you, if you ever plan on doing the same thing in your friends garage, take their parents Mercedes out from the next stall, I hear this paint tends to make a cloud and then settle elsewhere, not that I'd know.