Just went through this mess too. Skip NAPA and Dorman - I tried both places and they don't have anything that fits. The truck repair shops in my area didn't have any 9/16 either. I scoured the Internet too, but nothing. I ended up finding another truck a guy was scrapping out and got the whole brake drum from him. From my recent experience, your best bet is to find a replacement with good studs. I'm gonna start scooping these up as I find em now. I know someone out there needs em. I sure hate to see em scrapped just because they're for a big truck. Hope this helps. Keep us updated on what you find
