Open your eyes!!!Probably the first you will see...!!!Here are some photo of the track I install on my 70,after 10 hour of work it's the result.A LOT more traction in snow,riding in 5 inch of fresh snow is EASY.Can swap to the tire in 5 minutes,3 bolt on each side and all is removed.I used modified atc90 hub.Track setup is from a snowblower.Maybe a ski in the front will be the next mod.