Bourque last month pleaded guilty to five counts of arson and three counts of attempted arson. McAllister entered guilty pleas to two counts of arson and two counts of attempted arson.
The Bureau of Alcohol, Tobacco, Firearms and Explosives says Bourque was sentenced to 20 years for attempted arson, to be served consecutive to the life prison term.
McAllister also received 20 years for attempted arson, but that sentence will be served concurrently.
Charges are pending over fires in Van Zandt and Henderson counties. Nobody was hurt in the 10 blazes.