Borla(r)'s CrateMuffler is the world's first muffler purpose-built to optimize the sound & power of crate and custom built motors. This CrateMuffler features the aggressive ATAK(r) sound. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. The directional design provides custom sound tuned for each engine family and will dramatically reduce or eliminate drone on specified applications. Built from premium T-304 stainless steel superior to T-400 series (such as 409) to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit and best of all Borla(r) stands behind every CrateMuffler with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.Features & Benefits CrateMufflers are tuned for specific enginesWhen installed on cataloged applications they will reduce or eliminate droneMufflers have directional flow. Outlet end has mounting bracket on it.Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.Additional Attributes Body Height:OEMBody Length:14.000 in.Construction:All WeldedGrade Type:PerformanceInlet Connection Type:PipeInlet Outside Diameter:2.500 in.Inlet Position:OffsetInlet Type:OEMMain Piping Diameter:2.500 in.Material:T-304 Stainless SteelMuffler Count:1Off Road Use Only:NoOutlet Outside Diameter:2.500 in.Outlet Position:CenterOutlet Type:OEMOverall Length:19.000 in.Prop 65 (C R or CR):CRProp 65 - Long Label:WARNING: This product in the physical form it is sold does not present a hazard. However operations including but not limited to welding brazing or thermal cutting can expose you to chemicals including Chromium Nickel Cobalt Arsenic Cadmium and Lead which are known to the State Of California to cause cancer birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.govProp 65 - Short Label:WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.govProp 65 Warning Label:Proposition 65 Warning.JPGProp 65 Yes/No:YesShape:OvalTip / Outlet Finish:N/ATitle:CrateMuffler Muffler Chevrolet Small Block 350/ 383/ 406 CID V8 High Output 2.5 in. Offset Inlet/ 2.5 in. Center Outlet ATAK