Yes, alot of people get confused between "Factory" installed and "Dealer" installed. Just because someone purchased a car brand new with zero miles on it from a dealer with a sun roof does not mean that is how it came from the factory. Delars installed alot of things on cars. So, just because it looks professional or it was like that when purchased brand new does not mean it was factory. Pontiac did not put sunroofs in any Firebird or Trans Am. If you have a build sheet to prove other wise we would love to see it. There have been quite a few things like this over the years where we think one way and then a car comes along to prove us all wrong. It has happened before and still happens today. So, I am not saying one doesn't exist, but there is a difference between "Factory" and "Dealer".