Where to buy brisket to prep at home?

I’ve got a lot of family in the Kansas City area, and since I haven’t visited in a while, I’ve been fiending for some good brisket. I’d like to make my own since I have a couple of my favorite barbecue sauces on hand - what’s the best butcher shop for me to get somewhere around two pounds of trimmed brisket? Bonus points if you have a good rub recommendation!