...I'd suggest buying a roll of the tubing so there is no connections inside the boxed frame and get someone that has a nice double flare tool to flare the ends for you.
Yee, you can put clips on the chassis that reach inside the frame and hold the line up....especially to keep it off the bottom of the frame. I'm not sure what those little zip tie lo0king things are called. They go inside the hold, around the line and back out and you pull it tight.
I just replaced the line on my step son's Dodge pickup. 1999 or 2000 I think, and the line was inside the chassis. The line was a one piece 128" long!!
It should last more than a life time so do it if thats what you want.
