PURCHASE DISCLAIMER: RR Racing does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. RR Racing will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls. PPE headers for 350 RWD (V6 2GR-FKS engines) for model years 2018 and newer (2016 for GS models -- see fitment table below). These headers have a much larger cast inlet and 2.25” tubing with a 60mm outlet. These headers do not have cats. Please see another product in our catalog for headers with high flow cats. Please note that RR Racing has not tested these headers. We are in the process of developing a tune for these headers. We expect that these headers would make 15-25whp over stock based on prior experience.