Howdy and welcome!!
Looks like a great project and having some of the 'junk' removed is a nice starting point. I spent a lot of time and energy getting the seats, overhead luggage racks, and lavatory out of mine - just so I could get started moving forward.
MCI has a pretty good website and parts store at https://partsstore.mcicoach.com
. Registering is easy and they don't bug you with marketing email. The parts are not exactly inexpensive but nothing about a coach is. Quite a few of the parts for my 1998 are no longer available so wonder what it might be like for a 1988 model.
I've not used them for anything but IBP Industries
might be a resource for you as well.
There are some bus/coach wrecking yards around that I would really like to visit but haven't yet. See this thread for that list. http://www.skoolie.net/forums/f14/wa...nada-5568.html
I was able to find a full parts and service documentation set on eBay for my 102-EL3 - maybe the same exists for yours. I have found that documentation and diagrams invaluable and have spent many hours studying it.
Best of luck! Keep us updated on your progress please!