Been there, done that. Front clutches will fail. If the remainder of the unit is ok, you can replace the front pack and reseal the apply piston but I'd go for the rebuild. The noise you heard was probaly the apply piston hitting the front drum.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.