Power brake hookup to manifold or carb.

Probably overthinking as usual. I tried multiple searches but came up empty. Just wondering if anyone has any experience with which way works better or if it matters. Edelbrock 1406 on a Performer manifold on a 318. The Eddy has a port in the center of the rear of carb that instructions say is for power brakes. Currently have it plumbed to the manifold port over the number 8 runner but have not driven yet as I'm waiting for a filter element for the air cleaner to show up.