General Maintenance & Repairs - Where can I buy seat brackets/tracks/guides?

I found a link back in the day, but have since lost it. My passenger side seat bracket / rail / track thing has started rattling, and I want to replace it. Does anybody know a site or anywhere I can buy one of these things? Right now i'm trolling the classified section looking for one of these. If the site isn't a vendor, please shoot me a PM!

Edit: Deleted my old thread to correct my title's spelling error. If anybody could help out that would be awesome!!

Classic Industries sells them, but an online dealer store should be able to sell the parts to you for less.