Anybody know anything about mid 80's-early 90's VW convertibles? I just bought a 1992 for my daughter and am looking at a 1987 for my son...what should I look for ? Common problems?

I tried several VW forums, but the people on there all seem to be, well, young, and use slang and weird spellings that make me feel like an out-of-place dinosaur.

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2002 Ford ZX2
2 x 2013 Honda Civics