Carter AVS secondary spray bar question

It probably doesn’t matter since the plenum is open on a single plane manifold. The 4966 is a low performance 440 AVS. I’ll have to check my stash of AVS’s to see if the high performance AVS’s are made the same way.
The LP 4966 spray bars have two holes in the drivers side and three on the passenger side. The HP 440 carb has three on each side but the holes are larger than on the LP 4966. FYI, the drivers side of the stock manifold has the low port floor and the passenger side has the higher port floor.