After thinking that my stock headers where cracked, I purchased some STI P&Pned headers. In this picture you can see my original 2006 WRX headers below with the UpPipe attached still and the 04 STI headers above them. The geometry is slightly different. This is to accommodate different size oil pans. Thankfully, the STI headers clear my WRX oil pan. I do not believe that the WRX headers clear the STI oil pan.




I decided to get rid of the stock heat shields and wrap the headers. So I ground off all the tabs.