Casey from SWISCO responded:
April 1, 2022
Hello, It looks like you have either our S351-25, with a 15-002 bottom attachment, or S390-25, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2440 spring strength option for your replacement balances. As for the top sash guide shown in your first photo, we would need to see one completely removed from the window to compare to our inventory. Thank you! Comparison of the S351 and S390 balance shoes.
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Unfortunately, The measurement on that white runner piece is 1 1/16 inches, The color of it more closely matches the 1 inch but my assumption is it's probably worn down over the years so it might have originally been 1 1/8. My guess is either one would work.
I am attaching pictures of the top sash guide piece and I am also attaching a picture of the clip that's on the window frame rail some of those are broken too so we're gonna have to replace those if possible.
Let me know your thoughts.
Thanks
Russ