Vibrant 2-1 SS Merge Collector 1.75" Inlet ID, 2" Outlet OD | 10352 315 Horsepower if stock spring is in

if stock spring is in a usable statement at the moment of cam installation

and a Subaru OEM Drain Plug Gasket to seal that pan up

Big power setups need lots of air

as well as an ultra-efficient 6

Vibrant 2-1 SS Merge Collector 1.75" Inlet ID, 2" Outlet OD | 10352 315 Horsepower if stock spring is inAll Vibrant Performance merge collectors feature complete T304 Stainless Steel construction, precise fabrication, top quality TIG Weld and hand porting inside the collector for smooth, unobstructed exhaust flow. This item is non application specific. Please verify compatibility before purchase. May require some modification for proper installation.