Totally Stainless has great kits, and they wont rust. Once your truck rusts away to nothing you can reuse all the nuts and bolts and screws on your next truck.
I bought my kit from Frank (PICKMUP), he's a board vender.
Here is a link that you can check out of the different kits for our style trucks. Go to page 47 in the PDF
http://www.totallystainless.com/2008.../catalog32.pdf