actually i'm not doing the trunk, i'm doing the inside floor pan. i don't have carpet in the car and wanted to paint it black and want a texture to the paint so make the inside a little more rough so my feet don't move round that much when i'm banging gears in my automatic haha. that's why i said about the bed liner because it's a rough texture but don't wanna pay that money for it because i have a **** ton of black paint and want to just buy something to put in the paint so give it a rough texture. i heard sand and cat litter would do that for me.