PTFE vs Rubber line fittings

[BR3W CITY]

Help me out here guys, I've never even touched PTFE in a project before.

I decided to re-do some parts of my fuel system that had regular Fuel injection rubber line, since the NHRA rule doesn't seem to like that stuff

The rest of my system is mostly -6 AN braided stainless rubber-core line, and was assembled like I'm used to. But on ordering some new -8 AN stuff for part of the feed, I somehow ordered (or was sent) -8 PTFE. To make it more confusing, the two -8 fittings I ordered are from 2 manufacturers and look completely different.

Fitting #1 they sent me, -8 straight swivel AN fitting with the connection type I'm used to (small threads all the way up).


Fitting #2 from Aeroquip; -8 90* swivel, but with an end that has a ferrule on it.


Here is the hose




I'm guessing I can't use all this stuff together. Should I return the ptfe hose and find the regular rubber core to use fitting style #1 like I'm used to...or should I return fitting #1 and find a straight -8 that matches the style of fitting #2?