Diesel Bombers - 2007 dodge ram 2500 5.9 Cummins tranny line replacement

I am trying to make some replacement transmission lines for my truck because currently I have rubber hose and clamps between the cut sections of hard line and I sprung another leak where the lines are Heald down near the engine.
So far from research I found that I will need 8an fittings and 1/4"npt. I would like to know if firstly this is correct and also if it is for each of the 3 transmission lines which fitting I will need on each . I really appreciate any help. I have been looking at multiple forums which is where I
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got the previous mentioned fitting sizes but have not found a tutorial or lost of fittings needed for each hose.

From what I've gathered so far I believe I am going in the right direction but a breakdown would be amazong. I have a list of fittings I believe would work ( which I will provide screen shots of) but need a bit of guidance.

Thanks !