I see that John has replied to your post. It is possible that you have the wrong stripping. See if you can find a part number on it that matches that in the graphic that John posted. Or see if it has a 580RRWS Part # on it anywhere, which would mean that it came from The Bird Nest and IS for a 1958-1960 Squarebird. Here is a link to that. If you click on the Info/Specs pdf link you will see that it shows the same graphic that John posted.