thanks alot, i didnt feel like making a $440 dollar investment if there werent some obvious changes and differences. i know it has a lower cg and the fuel tank move has made a difference when pitting. the overall design is easier to work on the car but that is all stuff that will save u time inbetween races in my opinion. maybe ill get one when i win the lottery, but until then i can get 2 more equally equiped x3s online. thanks (wo)man?