That's very cool. I remember some really exotic Chaps in the mid to late 70's but only saw them in pictures. There was a snowmobile magazine then (Race & Rally?) that had all the cool sleds and engines from the factory race teams. Chaparral had some big F/A triples: a 650 and at least one bigger- 725 or 730 I think, along with some big liquid cooled monsters. Maybe someone should just see how many laps they'd make until they turned into so much goo. Hmike????
Stuck in the seventies- not in the swamp.
(6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far