TEXAS AMERICAN BANCSHARES <TXA> TO SELL UNIT Texas American Bancshares Inc said it agreed to sell its Texas American Bank/Levelland unit to <First American Bancorp Inc> for about 12 mln dlrs in cash. Texas American said regulatory approval ofthe transaction is expected in December, and the sale will close shortly thereafter. Once the sale is completed, the unit's name will change to First American Bank of Texas. The unit reported total assets of 196.7 mln dlrs on Juen 30, 1987.