East Village and Williamsburg taqueria Dos Toros is opening a new location in Chelsea, just a couple doors down from where one of its competitors recently shuttered. Can Dos Toros succeed where Tres Carnes failed? One thing’s for sure: They’re pulling out all the stops to make it happen, by giving away $1 burritos during their opening day. You can snag one of them (guac and all) at the new store (668 6th Avenue, near 21st Street) on Tuesday, March 7, from 11:30am to 2:30pm and then again from 5pm to 8pm. If you’re more the taco type, a dollah bill will also get you two of those. Between this and the 32-cent hot dogs on March 2 and 3, you might just save enough lunch money to buy an $18 cup of coffee.