i chopped up a vn commodore panhard rod to make mine

can use anything you can get your hands on really

what ange said, or if you want really shmick looking more solid ones you can use rod ends at either end

the best way to do it with a ute though would be to make them ontop of the diff, so they are like the top 2 links of a 4 link setup
as i think they would have better leverage of the diff on top than below, so should stop tramp better. mainly if your running lowering blocks
and if you want to get real trick you could make them diagonal so they stopped side to side movement of the diff also

make me one please ange

here is a pretty good DIY caltrac bar instruction.

Someone posted it here ages ago.

I'm going to build mine using the remnants of a four link out of some van I bought the diff out of. I suppose sunny rear links might work too.

so how much are a pair worth to you zigzag?

i can have a look at what sorta control arms ive got sitting around at dads and maybe knock something up

Heres the instructions I used when I made mine http://www.hotrodsandhemis.com/Traction.html

whoops! I failed to post the link!
For what it's worth, it was the same link posted by bones.