it won't be noticeable--don't worry about it. (the kaminari kit IS slightly lower than the ww kit though...but by the time your eyes cross the gap in the wheel wells you can't notice it without a ruler)TRD
sides go fine with a kam front as well
but anyway, i'm not a fan of the kaminari sides..imo, their 'too bubbly' looking and the celica is all about edges & lines.
personally i'd look into getting the rmm sideskirts..they'll flow good with the ww lip