True, it is a BIG difference. I was just pointing out that it isn't a Whole lot of parts that need to be changed out. Six is actually running his with a center diff, and I am going to be converting mine to a center diff. The 2-speed on these shifts WAY too early, and is basically useless. Then the only difference would be the shock towers and shocks. I think I read somewhere that you could use front buggy shocks on all 4 corners. Just need the shorter, heavier springs for an on-road feel.