Originally Posted by moparjohn
I learned something new, thanks Andy!! How is the 73 door up made? Extruded? MPJ
1973 and up, doors are made with extrusions.
You can upgrade your trailer with a later year door, but you will also have to change out the door jamb, the part that is riveted to the shell.
On up to about 1981 models, the doors are the same as the 73 models.
If that's your choice, changeout of the door and jamb, is a must. Cutting some of the shell away at the upper corners must take place.
The top of the later doors have an entirely different radius, which allows more clearance for a persons head.