I am putting on my lift right now and decided to get longer brake lines now, I found out what I need for the extended brake line on the rear but what about the soft line that comes down vertically into the block on the axle? What year and model truck would be a direct swap for that soft hose?

you're talking about the breather hose? any hose from the hardware store works fine.

you should just be able to pull that vent tube down to reach your axle, or better yet, replace it with a bellow...

Ya I figured out it's the breather tube. For now it should be long enough. Moved it below the fuel filter and got a few inches out of that. My front breather tube is busted so I'll replace both soon