QUOTE(porschetub @ Jul 10 2018, 07:17 PM)
I used late VW plastic FI line and ferals then truck metal brake pipe @ the front,EFI hose clamps only,my original plastic hose was as new but heeded the warning from this forum...feel happier I did the replacement.
If the plastic lines are good I wouldn't worry about it.
If damaged, you welded in new floors (welding heat), or you are running high pressure for a front FI pump, then I'd use the SS lines.
With a stock location pump these lines are low pressure, only the pump to regulator FI loop is high pressure.
The truck brake pipe is OK but it should have a rolled barb, especially for high pressure.
FI clamps should be the only type used and SAE 30R9 rated FI fuel hose.
I used to say SAE 30R7 hose was OK for all the low pressure sections and carbs, but after some research on hose quality I will now only use SAE 30R9 rated FI fuel hose on all the fuel lines.