In case you wish to hold down your Jack stand this way in your trunk.
John Q.
Here is a picture I had on file for a 58 De Soto with one of the clamps, I have another one for a 59 Dodge but have never seen on on a Plymouth before…It should work though…
Here is the other picture I had on file, I know it is a 59 but I believe it is a Dodge that this pic was taken from. It shows the same clamp but in a different position then the De Soto.