sliding glass door with wood frame hardware

A handy person from Sisters, oregon says:
Hello associate,
Existing lock and handle set made by. Sash controls, Ferndale Michigan.

I wish to. Change this handle set out from interior latch/ lock to exterior keyed lock with interior latch as well
Can we just replace the exterior trim. In dark bronze finish?

Or do I have to purchase a full set?

Would you have parts?

Price please, this is for a rental unit that needs to be locked up asap

User submitted photos of patio door hardware.
Profile picture of Tom
Tom from SWISCO responded:
Hey, Bob. I'm afraid we do not have the individual components of these sets by themselves, but we can replace the set as a whole. See our 82-034 and 82-075. One of these may work, depending on the thickness of the door.
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