The stock fuel rails don't use AN fittings.

Shawn...

 

yea i know. i am using SS line and now one of my elbow leaks. i forgot to add imy car used adapter for it. i can't find out what size it is. i'm sure it's 6an, but i might be wrong.

 

If you're using fuel rail adapters then it is most likely 6an. You can also measure the outside diameter of the SS line to determine what size fittings you are using.

If you're using -6an the outside diameter of the hose will be 3/8" if you're using -8an fittings then it will have an outside diameter of 1/2".

Hope that helps,
Shawn...