Aage:
Welcome. I’m a fellow Ontarian, nearer the end of an extensive reworking of a 1976 Argosy than I once was.
Virtually the entire trailer has been customized. You can see many ideas on my main thread, including the installation of a superior German roof light by Seitz and the addition of a window to the formerly blank door.
I bought the window from another forum member, Balgrn, in New Hampshire.
A long read but many photos and you may enjoy the trip:
Contemporizing 1976 Argosy D - opinions please
Sergei