For Nissan RB20 RE20DET RE25 RE25DET Stainless Steel T3/T03 Turbo Manifold - Side Mount Made of High Quality T-304 Polished Stainless Steel Alloy Material for Strength and Durability Tubular Design with Equal Runners to Ensure Equivalent Exhaust Flow Rate from each Cylinder TIG Welded CNC Machined Flange for Resistance against Cracking and Wearing Increase Engine Exhaust Output and Efficiency Standard T3/ T4 (T03/ T04) Turbo Flange Configuration Outlet