I get what you are saying Keith. None of these trucks are really rare. I was more referring to the seemingly more popular '87 year, and the fact that it's fairly unmolested.
I have only ever had the opportunity to drive 1 MY6/A833 truck. It was a much more enjoyable driver than a SM465 truck. Unfortunately I've never had the opportunity to buy one. I could start another discussion by stating they are "rare"!
Mike