I bought a replacement line from the dealer. Its freaking LONG. Wondering if the tank has to be dropped to get it in there. I do not have a lift, but I can get the truck pretty high on jackstands.

 

It's easier with the tank out of the way....... I think you can either lift the bed, or drop the tank.

 

I would just run it wherever it's easier for you. I usually buy a 50 foot roll of brake line and bend it to fit for all my vehicles. Personally my opinion it doesn't have to go exactly where it was. I've never had any issues with routing it my own path. But if it's pre-bent and basically ready to bolt on then it might be a bigger pain to run it somewhere else