Not for Northwoods, makers of Artic Fox and Nash and a few other lines. But, then again, ew are actually speaking about Thor! Curious as to what parts, the majority of items are all interchangeable anyway. Fridge is Dometic or Norcold, etc. Cabinet doors on the other hand...
Good luck on proprietery parts from 1992 though. With Winnebago you would be in luck.