As a starter for finding some of the really big important details, did they add the "standard" label like this?
Click this snip to get a better view!
A link to where I picked this label at random:
file:///C:/Users/admin/Documents/12Sightseer.pdf
It has been my understanding that this label was required but that is based on guessing!
But if you did not get a label to tell what chassis, etc, did you get paperwork telling you these details? Part of the RV confusion when repairing can be from the chassis being a year older than the body of the RV!
If you get around to needing chassis parts like brakes, filters, motor work, it will be vital to know what year the chassis was built and by which builder!
It can create lots of confusion if we try to buy parts for a 2012 Chevy when you really have a 2011 Ford! You may need to dig into this as you go along if no label was added!
I might guess that you have something that would be built using "standard items for much of the RV but then mods and changes were may in the design.
If you have anything that says which Winnebago model or floorplan, it might start on getting more info like where and how things like plumbing and electrical might also be built.
I would assume they started with some basic design and then swapped what was required to get to the unit you have, without having to start from scratch and build totally new tanks, plumbing, etc. as that is such a super big job!
Sounds like an adventure in the making!
Have fun and carry on!