Thunder Ridge says it has the Traditions Kentucky kit in flintlock, but I can't see how they'd have it when Traditions doesn't showthe flintlock kiton their website. Be worth a call, I guess, to see if they've really got it or if they just haven't updated their website in a long time. Both Thunder Ridge and the Possibles Shop are showing variants that Traditions doesn't list.

http://www.thunder-ridge.com/products.php?cat=77