SS spring identification

[bballfan1]

Springs were in 71 duster. Part number on left is 2403853. Can't see a number on right side anyone know application?

 

[DC 340]

I do not believe that part number is a super stock spring. At least it does not appear in any chart I have for super stock springs. That PN also does not appear in the chart I have for the old drag racing springs that preceded The "P" series super stock springs. I am not sure what you have but I am inclined to believe it is not a drag racing spring by design.

 

[bballfan1]

it's a max wedge spring.