Very few changes if any, that I remember. I thought the holes where the same spot though. I will check for you. By the way, we did two of them two years ago, and love them! Better gas mileage on the 02 xc7 and better accelleration, no spin! (The 98 XC7 stayed about the same, but better ride.) That may be why the better gas mileage as well. The 121" use to spin when hit hard in the corners. Nice to go from 9 mpg to 11/12 mpg! Did lose about 5 mph top speed. At first when new, the gas mileage and top speed were bad. But after breaking in and loosing up a little, it made all the difference in the world. You will love a 136" awesome for those long, 200 mile days!