That was owned by my friend Dale. Saw it at the York swapmeet along with his Can-Am. Sweet ATK, probably the nicest I've seen.
I'm still working on resurrecting my '91 604, hope to have it done sometime this year. http://atk604resurrection.wordpress.com/
I've also started work on the CCM: http://ccm350resurrection.wordpress.com/
Sorry for the thread drift...