Originally posted by KMW
Wait... wouldn't this change the rear track width?
Yah, about 4-6 mm or so - but I think the T1R suspension mounts will do the same.
If real car handling carries over, it will loosen the rear end slightly. How much? I don't know. You could put offset spacers in the rear hubs to compensate. Some wsc cars run rear tracks several inches narrower then the fronts.
Any way - when you find the rear toe you like, how hard it is to change doesn't really matter. There are other settings that have a similar impact on over/understeer that toe has.