Doing a big project like this, you have to make hundreds of decisions along the way. Many of those decisions revolve around your overall goal in the project. Do you want to restore your vintage trailer to original condition, or do you want to customize it?
My goal for the exterior is to restore it as much as possible. We might have to make a few compromises when original parts or materials are no longer available, but hopefully you'll never notice. Windows and vents may move a bit to accomodate the new appliances and floorplan, but those changes will be in keeping with other 1956 Airstreams.
I don't feel the same way about the interior. If you're really going to use your travel trailer when it is finished, you want to make it really comfortable and practical for the way you intend to use it.
On the other hand, I hate to see the older and rarer trailers fitted with interiors that don't look right for the era. In this case, I hope to accomplish that mid-century feeling with today's comfort.