I've been out of this game a bit. Before I could find anything I wanted for theses things. Now not so much.
Any links , performance parts or quads to cross reference to look up parts to swap out on, would be great.

Thanks H

 

Thought someone who knows may jump in, but as nobody has, if it is a 2 stroke it will almost certainly have the Minarelli engine. Polaris used this for a while as did many others. Apache still do, and have turned it into a race engine for their competition model, using a water cooled cylinder and other mods, so it is quite tuneable.