I went AN throughout my fuel system all the way back to the pump at the tank, although that is not how I started off. I knew little about these when I started the install but this site provided a ton of information on the fittings, how to assemble, etc. So if you haven't been here yet I recommend it highly. They also sell all of the parts as well:
https://www.anplumbing.com/adapters/aluminum-adapters.html
I'm running triples and so my install is a little different. However, when I originally started down this path, I did not want to go all the way to the tank and so I ended up cutting and flaring the OEM fuel hard line so that I could make the conversion from hard line to AN. I found this hard line adapter on the site listed above. They also make banjo fittings for AN but I believe you can also get a direct thread in to the carbs from an AN as well. Check the site above.
One last thing. I hope you have deep pockets. Although I would do it again in an instant, it is not an inexpensive proposition. Just a heads up. Here's a few pictures of my install. If you have any other questions, just let me know.
Mike.