I have an '85 Polaris Trail Boss that we bought new.
It now needs rebuilt.
Does anyone have any suggestions on modifying it?
I was wondering if a bigger polaris engine would fit.
I also thought I may be able to get motorcycle engine to fit.
I use this for trail riding here in Alaska.

Also, does anyone know if I could get the hubs from a newer polaris to get the hydraulic discs? Mine has cable operated drums...
I have done some pretty interesing swaps on cars, but this is my first quad.
-srw