Does anyone know if you can get replacements for the ones that go down the frame, and if so what the part numbers are? Pretty much all the ones that hold the lines to the frame.

 

The plastic clips are no longer available and no one reproduces them. Also, I've searched and I haven't found any dealers or obsolete suppliers that have any.
There are three or four different clips used. I can get you the part numbers if you want to do your own search.
If your clips are still good they are easy to remove without damaging them. There is a small plastic pin that is driven into the clip to expand the "fingers" that grip the frame. Take an 1/8" pin punch or something similar. It has to have a blunt tip not a pointed one.
From the back side of the frame drive the pin back to the front of the clip. Don't worry if the pin comes all the way out. Then gently pry the clip loose from the frame. You might have to lightly squeeze the fingers of the clip together to get it to go back through the frame.
Installation is easy. Push the clips fingers through the mounting hole in the frame and then tap the plastic pin flush with the clip.

 

mine are all trashed. what other options are people using? If you've already searched I'm not gonna try. I don't care about it being stock, I just want them secured.

 

You could probably use addel clamps (Those rubber insulated clamps) and use the original holes in the frame to through bolt them.

 

after thinking about it, I'm wondering if I can salvage the ones on my parts scab. that would be nice.

 

Another way to go is to make new ones out of small pieces of sheet metal. You just bend one end around needle nosed pliers or a big nail would work and drill a hole in the other end, the "spring" in the metal keeps the line in place. I made mine about an inch long so they had good tension yet were easy enough to lift up with the edge of a screwdriver in order to put the brake line into position. Takes only a few minutes to make yourself one. I had to re-route new brake lines for the front of my dent and the results were just fine. The price was also right!!!

 

I've used the single and dual line ss clamps from speedway on a number of builds, will be using them on the F150 as well.
Stainless Steel Line Clamps - Speedway Motors, America's Oldest Speed Shop

 

Nice, those dual line holders look just like the plastic ones, I'll order those. Thanks.