This is a fuel injection intake manifold + exhaust manifold for a Datsun / Nissan Z car. I believe it is for a 280Z but it could also be for a 280ZX. It looks complete but I did not own the car it was removed from so I can't guarantee working condition. It looks like it was taken off the car a long time ago, so will need cleaning. It has all the injectors but I do not know how well they work.