Mount in some way that I mounted my upper lumps.
An outside bolt through the top of the port where you install your pipe plugs.

Short bolt w/a location pin.

You do not need the devider plate to be just a flat piece of plate aluminum or steel,you can have a little extra material towards the top of the port for mounting a bolt to install.
It does not hurt airflow to have a little bubble of material extra for the a mounting bolt or some type of fastener.

Hope that makes sense.

Port velosity will go up w/the devider, but I think you will find the cfm will go down,because now you will only be flowing from one port instead from the two w/out the devider.

Also you do notice there is not much material left for sealing.

I had opened up my intake port larger than yours is w/even less material for sealing the intake manifold,& it still did not flow that great & was not practicle for me to run it that way for a street car.


MBHD

12 port SDS EFI