3130 J spring window balances

A landlord from Freehold new Jersey says:
May 3, 2021
Windows were installed around 1989
Marked 3130 J

I need to replace both sides of the window

Can you advise which parts I need to buy please?
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Paul from SWISCO responded:
May 6, 2021

Greetings. You have a a discontinued Swinger Window. The balance you show will be a custom 32" with the 19-008 top and 15-025 bottom fitting attached. The stamp weight will be 3130. The opposite side ( HINGE SIDE ) of the window will be a custom 32" balance with just a top fitting, 19-008, and no bottom shoe. The stamp option will be 3140. 

My colleague, Bob, just sent you an email with two custom links enclosed to order these respective balances. Let me know if you have further inquiries. 
Channel Balance Top, Silver Line
Channel Balance Top, Silver Line
19-008
$1.20
Channel Balance Shoe, Silver Line
Channel Balance Shoe, Silver Line
15-025
$1.52
Spiral Balance Fork
Spiral Balance Fork
16-008
$1.02
Take Out Clip
Take Out Clip
16-009
$0.91
Top Tilt Latch
Top Tilt Latch
18-027
$0.95
Hinge Leaf Assembly
Hinge Leaf Assembly
15-058
$2.95
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