Reman Thermoquad from holley new help with ported vacuum source

Hey I bought this reman thermoquad through summit. I installed it and thought the front port farthest to the drivers side would be the ported vacuum source. But when I put my vacuum gauge on it was manifold vacuum. I went through all the ports on it and couldn't find a ported vacuum source for the distributor. Does this carb not have it? I have looked for a clean picture of some one pointing out the ported vacuum source one a thermo quad but couldn't find one. I saw there was a write up on how to drill the thermoquad for a ported vacuum source but it kinda had crappy pictures too. If anyone could tell me if this carb has it is would be great. Also if you have a picture of one with ported vacuum that would be great.