Irish stout made into Chocolate stout?

I still have the Irish Stout kit that came with my carboy kit from midwest.

I would like to modify it to be as close to possible as the Chokolat Stout from Souther Tier. A what i consider very tasty Chocolate Imperial Stout.

Does anyone have a recipe for that brew? or a recipe of a very close clone?

Midwest's Irish Stout:
http://www.midwestsupplies.com/irish-stout-w-fermentis-safale-s-04-11-5-gm-dry
his recipe include: 6 lb. Dark liquid malt extract, 4 oz. Chocolate Malt, 4 oz. Caramel 10L, 4 oz. Roasted Barley, 4 oz. Flaked Barley specialty grain, 1 tsp. Gypsum, 1/2 oz. Nugget, 1 oz. Willamette pellet hops, yeast, priming sugar and a grain bag.

What ive pulled from Southertierbrewing.com:
We have combined the finest ingredients to tempt your senses & renew the power & interrelation of history in every bottle.
11.0% abv • 195º L • Imperial Chocolate Stout • 22 oz / 1/6 keg
2-row barley / caramel 60 malt / barley flakes / chocolate malt / bittersweet Belgian chocolate / kettle hops: chinook & willamette


Comments, words of wisdom, guidance, criticism, all our welcome!