part needed

I purchased 39-092 for a right-hand side replacement I need for the partner of this left-hand side window. It looked similar but not quite it. The biggest difference it seems 39-092 has a short track/bar that extends whereas these have a longer bar.
Would you have a better idea of a good part number? thank you.

I also took a look at the length of the casement operator on the inside part of the window. The length of 39-092 is about 5.0-5.25 inches while mine is about 5.75 inches.

If you had any specific ideas on how I could most easily narrow it down to the exact part I need that I can provide to you such as measuring something specific (as best I can) or reading a specific number on the window (if one is available you need) I would be happy to.