Is the 39-254E an equivalent Replacement?

A handy person from Connecticut says:
I am looking to replace multiple Anderson 7 1/2 inch single arm casement window operator model 7073A. Older windows, older home. Are the Ellipse 39-254E an equivalent model? Any help would be greatly appreciated!
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Tom from SWISCO responded:

I wouldn't say that the 39-254E is equivalent, no, but it may be the best option we have. Even then it's no guarantee.

To get the 39-254E to work for you, you would also need to replace the track with something like our 39-504 or 39-512 at the very least. At most, you will also need to alter the sill and sill trim to accommodate the Truth style base, which has a different shape and size and likely won't fit properly in your window as it is now. Just something to keep in mind. 

It will take some trial and error to get our part to fit on your window but I think it's a promising option.

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