specify that ur talkin about the 02+ ITR, i didnt even think of that when i posted and it might confuse people.
now that i made a fool of myself let me tell you what i really know for sure.
the 05's increased the redline to 8000, up from 7900, they also make a longer withstanding powerband that makes the maximum 210 horse at 7800 rpm
as for steering, the rato has been lowered slightly i believe to alow for slightly better control
i also read somewhere that the final drive ratio was made larger, not sure on that tho.