Cargo/This End Up daybed/bunk (Seven Oaks)

I know this may be a reach but we have a Cargo daybed/bottom bunk we purchased in the mid 90s and one of the bottom rails where the bunkie board sits got damaged and cracked. Everything else on the bed is perfect so we are hoping that someone has a similar daybed/bunk they are not using that we could take the bottom rail (or the whole bed -- don't care). Since cargo has gone out of business we can't get a replacement from them and I would rather not scrap the rest of the bed if we don't have to. Picture shows the style we have but I think a side rail from any of the twin size beds or bunks may work.