make sure to use up to date fuel injection fuel hose, it wont rot from the ethanol & other additives in todays fuel.
I am currently using the up to date stuff but all rubber hose has a lifespan, and that lifespan is shorter than one may think in some cases, hence the want to stay away from it.
I would be awful tempted to use stainless brake/fuel tubing or normal steel brake line as a close second option. I'm not a huge fan of long runs of rubber hose and nylon is OK but not as easy to repair, IMO. I have a bunch of rubber line on three of my trucks and it really bothers me, it was supposed to be a quick and dirty fix and I never ended up replacing it.
I've considered using stainless tubing but it's a pain to work with in the limited space I have and it would bother me if it looked like crap, if I was doing a new build and had the body off it would be the ideal thing to use though. I'm in the same boat, was supposed to be temporary but has proven to be permanent thus far. The truck isn't anything super special to anyone but me but I'm not a fan of preventable vehicle fires either.
I just bought the doorman tool to do nylon.
I guess that says where my head is at with fuel lines.
My employer has it and I'm free to use the tool whenever, so I guess my head is in a similar place, haha.
Nylon fuel lines will last longer than the frame in the rust belt.
In my case the inverse has proven true, but if I hadn't changed everything they'd still be there. 412k on the frame so far and it's only had two small patches done where the shock mounts live.
My 36 year old Bronco II still has the original nylon lines. How crappy can they be?
My point exactly. I've dealt with rusty trash fuel lines on GM stuff a third of my truck's age many times, I don't like doing it any more than I need to.