Another tire question!

Complete newb here! Have a new to me 2013 800 eps le.

Running all stock 25s.

If I understand corectly if I want to get bighorn originals 26x9x12 on the front and 26x11x12 on the rear will need a spacer or trim ?

1.75 or 2" spacer?

If I go stock size with bighorns is any modifications ness?

And does anyone have any pics of the trimmed area?