There has not been a lot of activity on Skoolie regarding earlier MCI's.
Any plumbing, electrical, finishing or other general conversion information applies to coaches as well as Skoolies. MCI specific information will be easier to find on BNO or BusConversions.
Not trying to chase you off but the folks on those boards are focused on coaches the same way we are focused on Skoolies.
My first bus was an Eagle coach. I spent a great deal of time on those boards. There is a good bit of quality info to be found there and a few really nice people.
However, there are LOTs of really great folks on Skoolie and I fit in better here