Not very competatively, (not yet anyway) but I liked to switch gears every once in awhile. Its like a ford junk yard here and we had quite a bit 9" centers. We use to have a few 8.8s but there gawn. One has a 3.70, second 4.11, and the last one 4.56. I love the 4.56...its niiiiiiiiiice! All I run is the eighth mile (with 4.56 gear). I'm having a hard time with tire selection though