The driver's side is not available anywhere in any of the big box stores. The only place you can find them are specialty places like Classic and Laysons, which I did not know until I started this thread. Since the inventories of those companies didn't show up in any of my online searches, I had no way to know they carried the mounts until now. I need one, but since I have the 2338 and a hunk of 1/4" plate and cannot afford another mount right now, I am going to make what I have work.