*ISIS Tubular Exhaust Turbo Manifold - Nissan SR20DET S13/S14 [ IS-SRMani ] - Enjuku Racing - Performance Parts and High Quality Fabrication Doesn't look bad for $149

ISIS [I-sis] Stainless Steel Tubular Bottom Mount Turbo Manifold - Nissan SR20DET S13/S14

Stock location T25 flange for stock turbo or upgrade with T25 flange.

Machined Flanges. Extremely High Quality, Robotically Tig Welded, stainless steel.
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I don't know if your looking to spend this much. Up to you, just trying to help you find a decent cheap mani.