Angle Strips for a Stepside

[larey]

So I finally ordered my angle strips and bed strips. I have already grinded my old one off and am getting the materials to put the new ones on. I am looking at bolting them on, but have a few questions.

1. When you put them on did anyone place any kind of sealer or filler between the bed side and the angle?
2. If you bolted them on what kind of spacing did you put on the bolts? As I do not feel real comfortable welding them on yet.
3. Once they are installed nothing else is needed as the boards are placed under them?

I plan on using the two already square holes to put them in the proper place prior to drilling and bolting on.

My truck is a 1980 C10 Stepside.
http://67-72chevytrucks.com/vboard/s...d.php?t=622657

Thanks in advance,

Larey