coil system replacement help?

A quick learner from upstate new york says:
shoe
5/8 thick
1 1/4 wide
1 3/8 L

coil house
1/2 thick
1 1/4 W
3 1/4 L
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Jasmine from SWISCO responded:

Your existing pivot shoe is no longer available. We recommend replacing the coil spring balance system with our Series 140-12. We selected 12 lbs., because your old system is using two 6 lb springs. 

The pivot shoe is 1-1/4" wide by 9/16" thick, but before you purchase it, we would like to see your pivot bar to confirm that it will be compatible with the new pivot shoe. 

Alternate image for S140-12
Alternate image for S140-12

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