i would have to say that off all the mods i have done on my own cars this by far was the worst most unpleasant ordeal i've ever had to experience... the fronts were no problem at all, by now i could probably do the fronts in my sleep....however the rear were total b*tches...i never want to see a springs compressor again in my life...i thought compressing the stock springs was hard unitl i had to compress the eibach spring... still wasnt worth paying anyone for but i never want to have to do it again on a car with irs