My 57 Chevy panel has what appears to be a stock front sway bar but I can't find any info as to where to get replacement parts such as the rubber bushings.
Any ideas?  

yeah< mr duck1 ! If you have access to a vernier caliper with a digital readout, measure the diameter of the bar where the bushings support the bar. Then find yourself a knowledgeable parts person at your local auto-parts store, that is willing to take some time to go through his suspension parts catalog to compare bar sizes of other vehicles to match what you have. If that doesn't work, then try contacting companies such as Hotchkis, Moog, Performance Suspension technology, or maybe Fatman Fabrications. As far as the links from the bar to the frame, you can make your own with the appropiate sized heim ends and some round bar stock cut to the proper length and threaded on each end. I had one of those sway bars years ago that I installed on a 57 pick-up, and thats how I solved the problem. I wish I could remember what bushings I used to tell you. Hope this helps you in your quest.  

Here's what it looks like, gonna look into your idea about the heim joints. Thanks for the tip!!!  

Here's a pic of what I've got. Thanks for the idea about the heim joints, gonna look into that one!