Hello just picked up a numbers matching 318 70 challenger se. The car has sat for the last 20 years. Actually runs and drives. I have a couple questions the car was partially disassembled. The read small window and frame was removed along with the vinyl top. I want to get the window back in is there any manuals that would outline this procedure. Also I looked on eBay and they sell a front disc kit complete for 450 shipped. Is this expensive vs sourcing the parts individually.

I just ordered a new tank and fuel lines and want to get the brakes situated.

Some of my questions are assuming the 318 car isn't very rare but it is numbers matching. Should I try to keep it stock for value?
Thanks Joe