Someone at the S&W forum might have the info you want.
thanks.
I didn’t ask any questions but I looked at all the pics and saw someone posted a pic of an N frame with K frame stocks mounted. It appears the only difference between the k and n frame stocks is the part at the very top where the frame bump below the hammer presses against the crotch of your hand. K frame stocks mounted on N frame guns will have the grip not quite line up with the frame bump. Since I used a very old set of grips that don’t have the part extending up to the frame bump I didn’t notice any ill fitting.
See post number 58 in your link.