Urethane pace car spoiler

as far as i know, there are no gaskets or anything. mine is factory, and i cant see anything that would qualify as such! if i had the choice, id want to put something in there. my factory spoiler has rubbed the paint down where it contacts at the front and back

say cilrah sweet car! im always drooling over your photos every time you post! ive always wondered what my vette would look like with pace car paint, only reverse the silver with the black. in other words, black on bottom, silver on top. would go great with my red interior