I swap many t/c percussion set -up into a flint system
Will thay just drop in NO some inletting is needed and some lock plates are not a drop in also they need to be inletted too.
The vent liner holes sometimes you will get lucky other times the tang and barrel may need shimming and glass beding not hard just take a little time.
I have here a old t/c hawkens flinter 50 cal. I drop into a PA. hunter percussion set-up
http://i15.photobucket.com/albums/a3...r/P1010007.jpg
I done many over the years,I am working now on a new flinter 54 cal.
I just pick up a 1 in 66 twist RB Barrel T/C special run barrel a used renegade stock ,I have a older flint lock plate all drop in with out any work needed.