Safest most dependable option on dual fuel lines

[farmtruc]

safest is run hard line down the frame length, then crimp the end and use flexible hose from hard line to tank and fuel rail. flexible hose being what was said above. size should be 3/8".
return can be 5/16", or 3/8" is fine.
Use quality GM style quick connect ends or name brand compression / crimp fittings.

the best thing you can do is be sure all the fuel line has plenty of room to flex and move between components; make sure no fuel lines are near exhaust parts; make sure no fuel lines are near or resting on anything that is sharp or a 90deg edge (it'll rub right through), you wouldn't believe the stuff we see; be sure you over secure the fuel line with whatever you choose and be sure to remove the feed line going into the fuel rail and purge the entire system to rid it from any contaminants and debris. last thing you want is to finish and have a clogged injector. obviously catch the fuel in a bucket.

that's safe to me

[1991SSP]

Ive got it all fixed now, I went with dorman connects on the feed and return, used high quality rubber fuel injection hose rated for 200 PSI and 2 clamps per fitting, I got a 98 S10 fuel filter which fit directly into the old holder on the frame, it was correctly threaded on the gas tank side and has the quick connect on the engine side, for the return line near the filter I just cut the hard line, slid hose over it and used 3 clamps, routed both of them away from any sharp edges and exhaust and secured them with rubber lined clamps to the body of the truck. I had a reputable mechanic that has over 50 years experience look it over and he said I should have no worries, will still keep and eye on all connections in the future, thanks for the input, gotta love this site!!