Hemidavey . You are welcome .
I don't know how to tell which end is which on the bottom part of the manifold. I would like to see the picture you have of the one with the F . If it was inside , then I may have ground it off since, I did a lot of grinding on the inside . I don't remember seeing it. I have not tried this setup. I suspect it would not have great street manors, and I have been going to shows and not racing the last couple years. It would be tough to use carbs, and make linkage for models other than the race Hemi ones because of the linkage arms on the Hemi carbs being on both sides.

Mark