If you are sure it is paint, do you plan to spray it or brush it? Either way, since it is a small area, I would recommend just using a enamal paint. However, make sure to prep the area first. If you are planning to paint, it will need sanded so the paint can adhear to the truck.
Let me know if you have other questions.
Joe
Sunday, May 9th, 2010 AT 5:27 PM