I went through this process for a month. Even found the company that made them for Toyota. Main office Canada, dist. in Cal. Called them and was told the molds were long gone. So, only remaining inventory. I had 3 different dealers run a nationwide search to find the passenger side only. Now, thats searching by what the computer says. You would have to do a dealer by dealer search with 'hands on' to be perfectly sure. I did buy the passenger side when I had the chance just in case. I still have it in the package.
Good Luck!