OBX Performance Exhaust Header Manifold 02-03 Nissan Maxima 3.5L VQ35DE Precision Computer CNC machined flanges with TIG and MIG welded construction for strength and durability Dyno Tested Track Proven to Increase Torque And Horse Power Mandrel bend for ultra fast and smooth flow Value Added Direct Bolt On/ Weld On Systems with accessories included as shown Backed by Limited Lifetime warranty from manufacturer defects