I found that article while researching my 2001 zr7s, which I just bought as a winter project. It uses the same motor.
The zr7s is an anachronism... modern looks with old school performance from its ancient engine. Love it.
"Swim against the current, even a dead fish can go with the flow"-somebody (I forget Who)
I had a new 1981 model for 4 months and 1400 miles. I liked it OK, but was not overly attached to it and don't miss it. In Mar of 82 got the GPZ1100 that I absolutely loved, but was a real piece of junk to put it in mild terms, but even with that I would love to have the 1100 back. The 550 I have no memory of that brings back lust to have one ever again.
321,000 miles on KZ's that I can remember. Not going to see any more.