Hey guys! Recently bought a 76 280z. It was pretty clear the car had a bad exhaust leak, which I was hoping would be as simple as a gasket. Unfortunately after removing the manifold I discovered a crack. I can't seem to find replacement stock manifolds anywhere, and the few stock options I did see seemed to be around 650 dollars. The MSA 6-1 headers appear to work fine for around 230, But the shape seems off. They are longer with a different shaped flange at the end? My guess is that they connect under the cab rather than where the old manifold connected. Unfortunately the car is at a relatives until I can get it running again. I do not have the time nor money for a full exhaust system swap to the 2.5 pipes or anything like that. What exactly is required to replace this manifold?? HP/sound improvements are not necessary, yet definitely welcomed if the price is right. Any advice or knowledge about doing a direct bolt in replacement would be greatly appreciated. Thank you guys! SIDENOTE: The manifold is N47, with round ports.