I have a 71 Charger R/T sunroof car, The Challenger T/A in the pic above has a factory lookin sunroof (all were done by ASC) that has the cloth headliner with a few bows behind the sunroof. The high cost of the sunroof option in 1970 (almost $500) makes them rare today. Not all sunroofs were factory installed. Some were installed by dealers (they woud send it to a ASC instalation center) or you could get one installed yourself at a local ASC instalation center. The drain hoses (4 were used)were routed a bit differently in a non-factory install on the cars I have seen . I can tell you that the parts for a ASC sunroof are very hard to find today.