Selling a slightly used cobb stumble fix mod for the 2008 + gr sti. It is in great condition and comes with the original packaging. I decided to go with a different setup. I'm asking $200. I'm also selling a red grimmspeed aos. This is brand new and has never been installed. It includes everything except for the small fitting that allows you to connect to the factory hose. You should be able to get it from a hardware or auto parts store. I just haven't had the time to look for it. It fits the 02-07 wrx and 04+sti. Asking $175. Retail on the aos is $315 and the stumble fix mod is $290. Text for pics if interested @ 845-313-7339