Rallisportracing.com 100% bolt on 0% dickin around. No modding involved just 1 hour to install. Cost is 585 plus 35$ for shipping and if ur in Canada 70$. It used to be 560$ but he recently made a change to the headers. The only down side is he makes to order so wait times r around 8-10 weeks due to high demand. Well worth the wait the car sounds 9999% better. Famous subie rumble is very present.