Awning Truth operator and left side lock

We don't have a replacement for this operator, unfortunately. Its design is just a little too old and I don't think any of our more modern parts will work. I suppose the best option available to us is the 39-348, but the base is a very different design and therefore the sill may need to be altered to accept the new shape; that is assuming that it would work even after that.

We may have a match for the lock, but I would need a clear picture of both the handle and escutcheon removed from the window frame in order to confirm. If the operator is too old, there is a chance that this lock is, too, and I don't want to take any chances. Would that be possible?