Fuel line connection 6an thread to 5 /16

I paid a visit to my local speed shop,
they had this adapter fitting in stock

Fragola Hardline to AN Fitting 6AN Male to 5/16" OD 892005BL

You cut off the flared threaded end of the 5/16
Line. (The threaded fitting is removed). It comes with a compression fitting you slide over over the 5/16 fuel line, tighten it up and it's connected.