Thanks Paul.....So it sounds like Vintage means 25 an older since I'm 21.
XLTSP, the reason I ask is because there is a snocross with a vintage race coming up in march. My buddy has a 1980 Moto-ski Mirage 377 that runs like a top and he wants me to race it for him. The last race they had a old 440 cheetah won and I know that the Mirage quite a bit faster than one of those.
Looks Like I'm gonna have to call them and see what they say about it. Thanks.
-Josh