I lust for a K-frame 16-4, but there are none to be found.

However, I've managed to locate an unused 16-4 full underlug barrel and a .32 H&R mag cylinder.

Now I need a donor K-frame, and need some advice.

On which K-frames will the 16-4 barrel & cylinder be a "drop in" replacement?

Is there anything I need to think about regarding frame profile/barrel profile/pinned etc?
Will "any" Model 14 or 15 work, or do I need to think about a specific dash?

Will this model 19 be a good donor?
https://images.finncdn.no/dynamic/16...1370952986.jpg

How about this model 14:
https://images.finncdn.no/dynamic/16..._365190221.jpg

Any specific tips on what will be the easiest replacement?