LaMonte,
Any auto parts store that specializes in commercial truck parts should be able to duplicate your brake parts, or BCS should know the numbers and have the parts in stock.
Pat,
The Meritor ADB brakes on your coach were only used on the late 98 to2002 Marquis and the 2002 Thunder. Lamonte's Contessa has Bosch air over hydraulic brakes, not air brakes like your coach.
Gerald