Top spring to go with S152-8

A quick learner from Wisconsin says:
I'm looking for the hair or rather the top coil spring to go along with S152-8 . So the one that sits on top of the S152-8 that has the longer leg but I can't find the number you can point me in the right direction that would be a tremendous help thank you
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Tom from SWISCO responded:

There is no top version of the S152-8 , unfortunately. You would just use two of the same spring. The trick is that you have to manually stretch it to get it to screw into the shoe. I know that's not the answer you were hoping for, but that's just how these springs are made to work. 

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