Not as easy as you would think. it is the BC Broncos mount for AC (which is installed and plumbed, just not worth the effort . I will use the fitting the manufacture is telling me to use , I guess if it is wrong I will need a big box rags . Di you look at the links I provided? Why do you not believe the fittings prescribed in the instructions are correct? I do not understand that. Also, I called wild horses and was told it is the same fitting, inverted flare with nothing more than the brass ball fitting. He called it a mushroom ball. Press it in and screw in fitting, is what he told me. Sounds unnecessary to disassemble anything. I am not a mechanic. I am an old man in my garage. Things do not come as easy for me as you may think.
Much like you don't want to take the time to remove anything from the Bronco, I don't want to take the time to read pages of instructions that may or may not be correct when I can tell from a photo what you need.
Instructions, parts provided, and manufacturer's information often don't correlate, so it continues to be a guessing game and trial and error endeavor to get what you truly need.
Based on the photo you managed to get, you have the o-ring fitting and the instructions and manufacturer's direction regarding the pump having the conical fitting are incorrect.
You either need the correct -6 fitting with the o-ring or the conical drop in piece to used with the fitting the manufacturer is telling you to use.
OR you can use one of the aftermarket pressure fittings that have the -6 built in that replaces the entire pressure fitting and doesn't use adapters or fittings.