Thought I would add the original parts on my Eastman are the front hub and the seatpost. On a bike that started out as far better than any Flying Pigeon. Be realistic. The DL-1 ride is fantastic, billions have enjoyed it. You won't get to play if not ready for a whole lot of wrenching. Were I doing it over again I'd have started with a real Raleigh DL-1 from 70s or early 80s. They are around and offered for sale fairly regularly. All are low miles examples because getting them rideable is beyond most all of us.
DL-1 from 1960s or even 1950s can be found as well. They are lovely and should be kept largely original. You are not making a DL-1 into a daily rider and keeping it original.