Turbo Manifold Nissan RB20 RB25 RB25DET 240SX S13 S14 240Z 280Z 38mm WG New Design Offers Lots of Room to Mount Big Turbo 6-1 Merge Collector, Offers Best Exhaust Air Follow Fits 240SX S13 S14, and Old 240Z, 280Z Chassis Welded with 35/38mm Wastegate Flange 1/2" Thick CNC Cut Flange