You need to clarify what you have. I'm pretty sure there was an old Conway Challenger trailer tent, but there is also a more modern Conway Challenger folding camper. The dimentions of the pods may be different.
If you've got a sewing machine , use the old pod to make a pattern and sew some new ones. Or if you just want to freshen them up, dye them a colour of your choice
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.