I don't have timeslips or anything but the fact that two were turboed automatically puts them in the 'some of the fastest mirages' category because so few Mirages are turboed. There were also some of the more finely tuned Mirages around at the meet too.

I'm not even really sure what you mean by that question though. I'm a regular at mirageforums.com so I more or less know about most of the fastest Mirages... although most of the ones I am referring to are 5th generation.