Fuel Hoses Lines/piping And Fittings problems of the 2000 GMC Sierra 1500

I started smelling gasoline and found a corroded fuel line at the junction between the nylon line leading from the fuel pump to the steel line going to the fuel filter. Doing repairs, the hard brake line leading from the abs unit under the driver's seat area to the rear flex line connector was leaking badly as well at the rear-most fitting. Purchasing these lines separately cannot be done, so I'm replacing all of the fuel/brake lines myself. I'm using stainless tubing for the brake lines not provided by factory gm parts.

I have a 2000 GMC sierra that had brake line rust through causing brake failure. I got under the vehicle to try and change the line and found all the lines are severely rusted as is the fuel lines. Yes my truck is old and I live in the rust belt of n. Y but something needs to be done either n. Y stop using salt or the vehicles need to be built with lines that don't rust out. This issue I think is a safety issue that would be easily fixed by either no more salt or better line in the vehicles that don't rust through.