I plan on trying to install my eibach sportlines and koni reds within the week. My question is will i need to cut the bumpstop on my sportlines? i don't know very much about suspension and luckily the guy that will be helping me was once a mechanic. any other suggestions to make the installation go smoothly. i know a spring compressor is neeeded and i'm sure air tools are pretty much necesary. anything i'm missing?