The strut rod is at much more of an angle and needs the removal of the air-box or cutting it up to make room for the upper shock as well , on my WR 450 I just removed it. There may be the need to build some snow deflectors and stuff that is not needed with the Standard kit.
I got my bike working awesome and love my setup , but there are many hrs of fu283764ing with it. Not as straight forward as the St. Kit .
For deep snow I did stretch mine out to 136 by almost 11 inches and it works awesome+ about the same as a standard kit but not as good as a LT It takes the hits way better and with the narrow Hawk track it handles more like a bike and carves and turns awesome.
I love what I got but if I had to do it again I would probably go with the St. Kit no f#*&^%(*ing with stuff just bolt on and ride.