Yes- CF5 is the RPO for the astro roof; also, look at the edge of the astro-roof hole. The edge on the factory roof is rolled under, not just cut into the top. Finally, the factory roof will have a hole in the headliner for manual override.
The CF5 code should also be on the cowl tag on the lower left hand corner of it, which is located under the drivers windshield wiper area easily seen with the hood open. It's painted the same color as the car.