With the Clifford, I installed a divider plate to trying to improve fuel/air distribution & possibly increase port velocity.

Port velocity is low with the Clifford intake manifold.

What EFI system can you get free?

" I showed his little red car on page 1 or 2 of this thread. He suggested doing exactly what you did but after talking with Langdon I was talked out of it. "

Not sure what you mean by that statement?
Talked you out of doing what exactly?

My 12 port manifold sits pretty close to even with the cyl head.
The intake ports are at a 45 degree angle.

On the Siamese port head I would put runners pointing up a bit to give you more room for that spinning thing below.

MBHD


12 port SDS EFI