Need to replace MTS locking mechanism

A handy person from Back Door to home says:
My name is Adam I need to replace my entire MTS locking Mechanism. What is the part # for this. It has 323 stamped on it
Thumbnail of the uploaded file named Back Door MTS lock 1.jpg
Thumbnail of the uploaded file named Back Door MTS lock 2.jpg
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Tom from SWISCO responded:

Hello, Adam. I recommend looking at our 40-049 to start out. This isn't exactly the same as your original, at least not in terms of style, but the design is very similar. I think it may work as long as the dimensions all match up. Look it over and let me know what you think.

alternate view of 40-049
alternate view of 40-049
Dimensions for 40-049
Dimensions for 40-049
How to install the Swisco 40-049 Mortise lock set.
How to install the Swisco 40-049 Mortise lock set.
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