I have the RM Racing downpipes from Poland, purchased through Ebay for under $600. Great fitment, no issues. Used new gaskets and wrapped up really nice. The drivers side front O2 bung was a tad off, but easily fit through the hole on the top shield. I just could not use the factory steel 'cup' on the drivers side, instead using left over wrap material. Other than that, no problems whatsoever. These are the same used in this video: