Some thoughts on the repair and getting parts?
What is often missed is the RV is two things. One is the stripped down truck chassis that they build a house on top! That means parts for the RV chassis are usually just truck parts! There are some things that are different, like taillights and the small stuff that goes outside on the House but those are not the big ticket items we really need to worry about. The engine transmission brakes and all that goes in between are often just ruck parts and easy to find!
Service is one thing that gets funny because the folks at garages may think Motorhome and automatically know nothing about it! I do lots of my own but when needing some things, I just look for places small enough to walk in and talk to the guy who wants the work. I tell I will be there to open the hood, etc. and the smaller shops are okay with that as they just do much of it in the parking lot out back!
Then the house stuff? It really is much like your sticks and bricks house for repair as it is not the main house but all the smaller stuff we add inside that gives us trouble!
So when the furnace, air cond., stove, etc. stops, we really have to go to the books on that item, much like we do at the house!
The trick with what you are asking if that many of the parts in that RV are still being used in many other RV, so the name on the paperwork is not all that different from the next RV!
I would not worry that part if the RV looked right!
There is an interactive parts catalog that covers most all Winnebago motorized here:
https://catalog3d.winnebagoind.com/menu/Parts.htm
It lets you looks at tons of things for shopping from home that the sales info , etc. may not cover.
It's hard to remember just where small things were when you looked at one, so this gives you a floorplan as well as lets you look at small points like where the stool and shower set!
Best of luck in the trading. I've never bought a really bad one but then I've also never bought one that totally fit for long as life changed!
There are folks who do mobile service and tinker with all the parts or you take it to a special RV place where they may or may not know much more than you do!