If it is fiberglass you could change it how you like. Since this is just curiosity then yes it can be done, how easily - no more problem than replacing the frame and floor on a Scamp
The door could fairly easily be hinged from the other side, just fill the holes and drill new ones.
The frame can be modified and as a matter of fact if the step down from the dance floor is behind the axle
it would be considerably stronger than the cut down section on the Scamp
If you have the time and money then I would say have fun.
There is plenty of work in just replacing the floor and filling in the cutouts not needed etc.
I have plenty of work and money in rebuilding my 1986 Scamp
with replacing the floor extending the frame, moving the bath adding twin beds etc.
Turning around the shell would be just one more thing.
One small change begets many more to compensate.