Hi,
For obvious reasons, I would not be "cheap" when it comes to fuel conduction. Bare in mind the little cost of a couple of fittings is nothing compared to the cost of an entire car burning...
So, I would not connect the flexible hose directly on the copper pipe with a clamp, weather you solder an olive or shape a bead around, no. To me, the reasonable solution is the one shown by gaz05.
Use a proper fitting on the copper line, male or female, no importance
R000-R01M.jpg
... and a push-fit fitting on the flexible hose, secured with a clamp. Make sure seats are compatible (if you bead a convex seat on the copper line, use a push-fit fitting with a concave seat and vice-versa).
P00M-P00F.jpg
When screwed together, it is safe and for sure leak-free.
Push-fit fittings come in any thread, male or female, convex or concave and any angle from 45° to 180°, so you can make a very neat connexion.
Regarding your filter, do you run an EFI? If you do, just a little tip (if you haven't thought about it yet): remember that the filter protects the engine, but it also has to protect the fuel pump, so it has to be mounted before the pump, and not (as we very often see when people come back with a damaged EFI pump), between the pump and the engine. Here is an extract of our catalogue (in French, sorry, but I think it is understandable) showing 2 typical EFI fuel line set-ups.
EFIInstall.jpg
Hope that will help
