This is a picture of a D1ZE intake manifold (no trench, otherwise identical to the D3ZE version).
The manifolds in both pictures are from GTS Panteras. If you look closely at both pictures you'll see that the larger holes for the carburetor's secondary butterflies are not round, they are egg shaped. They have been elongated by De Tomaso to allow installation of a square bore Holley 4777 carburetor.