I can't recall the year(s), but Carl Crank(e - sp?) and a group of his mates went to a few US Enduros on 80s. Might have tried to establish a class / did a few rounds, or, just ride parts of the course(s) as a hoot. I don't remember the mag that did the story on him / them.
In an earlier Big Wheel 80s thread here, I told of my experiences as a Course Marshall at the 92 OZ ISDE, with my following the 80cc class riders, and 125 class. It was amazing to see how Fast those blokes went, and how they just destroyed vicious, huge hills such as Tumblebee (I think that was what a particularly brutal one was called) Hill. I was quite a reasonable, competent rider in those days, but picking up on their techniques and lines, made it so much easier to get through Any nasty stuff.
And, those riders, especially the Italian ones, were incredibly stylish. Brightly coloured Silk scarves around their necks ( I kid you not), that never seemed to get a smudge of dirt on them, and said riders barely raising a sweat, whilst going warp factor eleven on screaming tiddlers.