Kind of an oddball question here: When the L frame was introduced, did it get its own frame-specific sized lockwork parts (hammers, triggers, etc.), or did it use lockwork parts from either the previous K and/or N frames?
If memory serves me correctly, the L frame retained the K frame's grip shape and size, but that doesn't mean that the lockwork part sizes weren't unique. Of course, even if existing K/N part sizes were used with the L frame, that doesn't mean that any part (even of the right size and appropriate engineering change) would just drop-in, given the amount of hand-fitting which used to be done with all of the revolvers.
Thanks in advance for your insights!