Sunroof removal and installation:
There are different model sunroofs across the years, this is what I did to get the sunroof out, and this is for a 1971 2800 CS with a manual sunroof: the sunroof can come out without removing the headliner or headliner cover, crank the sunroof back all the way and remove the screws that contain the cables. The cables are filthy so cover the roof of the car. Once the pieces are removed around the cables and all the screws are out the left and right track will be lose. Pull the sunroof up and out towards the front of the car and you may want to cover the sunroof so it does not get scratched. At this point the tracks will still be in the roof but lose. Thoroughly clean the area and where the roof seams fold over make sure you use a brass brush to clean any rust (yes, there will be some rust there) and then use some rust-proofing stuff. Make sure the seams are not lose or they will eventually scratch the sunroof. special note, take pictures as you go along, although there is really only one way they go back, it helps in the confidence area. I did not take pictures because I'm an idiot. Clean the track pieces and the cables completely. Older cars have greased cables, newer cars use a fuzzy fabric-y looking cable that should NOT be greased. Once all the pieces are clean (and now is a good time to replace the front and rear seals and clean the drain tubes) you are ready for re assembly. On the older cars the headliner cover gets attached to the forward part of the sunroof and hangs lose in the rear (for now). The attaching points for the cables on the sunroof are lose so to put the cables back in the sunroof and keep them there what I did was remove the tracks that were laying inside the roof cavity and attach them while the sunroof was laying on top of the car. Again, watch where the cables touch because they are messy. Then slide the sunroof with the track back into the car carefully, the sides of the fabric cover should be slipped into the lower of the grooves on the tracks. Once everything is in tighten the screws and re-route the cables. This is really easy although it looks like a mess. With the sunroof all the way back you can now carefully grease the cables with a small paint brush and put the covers back on. Once the crank is in (and don't forget the small black clip)- you'll see it in the center that goes over the gear and cable, you are ready to move the roof forward. Move the sunroof back and forward just an inch at a time then two, then three, you get the idea.
Good luck and PM me if you need any immoral support, I hope this helps some people
