My 81 Concord had a factory bare aluminum sunroof, that is how I know this. There is an add on page for the owners manual ( I still have the manual and add on page). Later on AMC or possibly dodge started using j part numbers instead. When my sunroof got vandalized in 1999 the insurance company, glass place and all the dodge dealers swore up and down that there was no such thing and since they "knew" it was an aftermarket sunroof, thats all I got for a replacement.
About 4 years later I was involved in some office/parts counter remodeling at a local dodge dealer. They had a microfilm machine and a filing cabinet full of AMC microfilms of parts and diagrams. During the lunch break one day I looked up the sunroof diagrams and part numbers. Once I found them, took me 5 minutes, I printed them since the machine had a primitive heat impact fax like printer. This printout faded out to blank years ago but I wrote the numbers down before they completely disappeared.
That day I had the parts guys check for availability and the whole glass kit, frame/seals, hardware and the separate upper glass seal were available. I tried going after the the insurance company for my rightful replacement and got nowhere as they would have had to replace the roof, vinyl and headliner as well due to the larger replacement aftermarket one in there now from their mistake. They wrote me a cheque for $100 (my deductible back) and said that was all I was getting and if I pushed the issue further they would pull a full provincial safety on me. The aftermarket sunroof always leaked badly from day 1 and has since killed the car despite being removed and resealed many times. The factory sunroof never leaked a drop of water.