Find a meat locker that will sell a pre-smoked brisket. Or, smoke one yourself and cryovac it so it looks like you bought it that way. I don't see it any different than teams starting with canned chili and adding to it. You are still making the end product on-site. For what it is worth, the MOFO Brisket Chili recipe in the recipe section has won once and placed second twice for me. Just go light on the chili powder.
Natural Born Grillers
Vice President Beta Beta Que Society