Stop in for a cup of coffee

Factory fuel filter locations are located in a relatively cool spot with the outlet higher than the inlet.
If you can't use that, what I've done is buy steel line that's already flared for the fuel pump connection. Rebend, and or cut and attach steel line with compression fittings. At one time I had access to fancy pants compression fittings, but for carbureted fuel pressures any run of the mill brass or stst union will hold quite well.

Thought no. 2. Buy the fricken Imperial Eastman kit because somewhere down the line you'll be making more flares. That's what I told myself anyway. Same when I bought the Parker 'bubble' type hose flare kit (used). Haven't used it yet. So it goes. But one day I will!