This manifold fits any E46 with a 24v inline 6 engine except the M3. Manifold is made with sch10 Stainless and 1/2″ flanges. This is made with a T3 flange and will fit a GT35 with a .82 A/R turbine. The wastegate port accects a vband gate with a 2.5″ flange. The Trubosmart hypergate 45mm is one that will fit. This manifold will support a 2.5″ downpipe, more if you notch the frame rail or go to oval tubing at the frame rail. Warrantied against cracking for 2 years.