Ford 8.8 of 96 Explorer my first gear setting but I did a lot of research on how to tune, bought tools and set the gears in 4 hours. It wasn't so bad once you figured out how everything works there to set it up. Knocked the snot out of my jeep and they were great, didn't whine on the road. Installed with Grizzly Locker and basic Yukon installation kit. Nothing came with stickers, which was kind of a shame.