Glen,
Noticed this topic languishing, so I will take a stab at trying to answer your question. To qualify my answer, I do not and have not owned a truck of your particular model.
I have found that brake line diameters are much like the water supply lines in a house. The trunk lines (primary)are often larger in diameter than the wheel cylinder lines (secondary).
Do the lines on the truck appear to be original? If so, just match the diameters. The female inverted flare ID on the wheel cylinders will often limit your possibility of line diameters that could physically fit.
Good luck.
Last edited by Paul_WNC; 10/07/2015 5:51 PM.
