Styx

Could someone out there, with a Win kit on their IS, tell me how much they had to modify their kit or car in order for it to fit properly? I am worried about the front bumper specifically. Do I have to remove the front crash bar? I love the kit...but do not want to have to remove the front bar or search around for a body shop that does massive fabrication in order to make the kit fit. Thanks in advance for your replies.