Howdy from the hills.

Studying a swap between 2 of my model 15s of hammers and triggers.

Gun 1: Smith 15-3 (1970) 4" w/ TT and TH.

Gun 2: Smith 15-5 (1987) 6" w/ Standard Hammer/Trigger.

I want to take the TT and TH from the 15-3 and swap with the 15-5's standard trigger and hammer.

Given the age and "dash" difference, Should I run into any problems dropping these parts into place?

I have totally dismantled and replaced parts in the guts of a K frame once before and feel confident in doing it again with care and patience.

Would greatly appreciate any thoughts or points.

THANKS to all y'all !!! Bo