I'm using the #8 because, before I had any #s in the rondells, a friend of mine told me that the car looked like an 8 ball. To be honest that hadn't even crossed my mind but it also sounded perfect, so that's what I went with. When I was trying to get the 8 all centered in the nose/hood I had stopped for a sec to open a beer and the number was laid on the car at a slight angle that just looked right to me. So that's what I went with, I think it sort of evokes a rolling 8-ball.