I had one back in 86, it was the USA model with no compliance but you could get them registered anyway.
I rode it at the SA four day and the Wonthagi 6 Hr.
Great bikes, I bought an 88 model a while ago, stripped it down to rebuild it and didn't get any further. Hopefully later in the year i will do something with it.
The 86 model had a slightly different rear guard to the 87-88 model, they looked the same but the fitting was different.
The 86 also had the neat looking headlight (see below), the later ones had the big square looking ADR light.
Actually went through a few headlights. I still to this day remind my mate Dave who rode with me at the Wonthagi 6 hr about when he handed it back to me and I took off to find the forks / bars twisted and the headlight flopping around in pieces.
He tells me later it was a good bike "but the suspension's not the same as an MX'er is it"
Seems he had a big off in a whoop section.
Some consider them too modern for Vinduro's, they are modern as far as the power valve and front disc is concerned but they are still old school air cooled with the old rocker arm rear suspension.