So an astroroof/moonroof was not available on Monte's ?
Available on Regals, Grand Prix and Cutlass for some reason and not on a Monte.
Mine came with an ASC power sunroof but the dealer had to send the car to ASC to have it installed since the original owner wanted one.
When I first got my car I thought it was a factory power sunroof and pretty much anyone that sees it thinks it is factory.
I believe the only difference is the non factory one has a trim ring installed around the hole.