Yep, it's right handed thread. Definitely used a boxed end or a line wrench though. They are soft. Try to tighten it a just a tiny bit first. Then loosen.
It's also clocked differently (the fitting is on the other outlet that is not drilled on the old).
I don't know much about the different fuel pumps so I'll leave that to the experts but I'd imagine you could just swap out the center bodies.