ProFab Performance Cast Flow series Manifolds and 2" Stainless Steel up pipes for 2001-2004 Duramax. Passenger side up pipe is built symmetrical to the driver side and WILL NOT clear a conventional down pipe in single turbo applications. This kit is designed for use with Twin Turbo trucks or Hood Stack setups. If you have a Single Turbo's, you want to purchase the Standard Cast Flow Kit.
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