Some first hand experience:
1) I did NOT have a good experience with a pre-built set for my 51 truck with a 62 engine. I was able to make the pump to carb piece work with some creative bending. There are too many variables with pump inlet angles and different trucks of different years.
2) You can buy pre-flared lengths of the NiCopp tube. It does bend beautifully, but the flare fittings are some kind of black material and I’ve had a devil of a time with leaks. Source your own fittings if you go the NiCopp route.
3) I’ve had good luck with the “regular” (some sort of coated steel?) pre-flared stuff my local Napa carries. It’s a little tougher to bend than the NiCopp, but leaks have not been an issue. I was too lazy to acquire a tool and learn how to double flare. Someday I will, but this was a nice “easy button” so I could rebuild my quickly rebuild fuel system and move on to other things.
