I've got a similar sticker on my 87 van's oil flap door.
Since Im at work right now I cannot tell you if it says exactly the
same thing though.

I've just finished rebuilding my engine also.
It was actually much easier than I expected.
The toughest part was removing the cylinders from the heads.
Also, removing the wrist pins from the pistons was a problem.
I had to "invent" a tool that worked like a charm. If your interested in
hearing about it, I'll post the parts for it. It's cheap to make, beats
out
the Volkswagen special tool by far!
Tony
87w/200k