Two problems related to manifold/header/muffler/tail pipe have been reported for the 1997 Dodge Ram 2500. The most recently reported issues are listed below.
Engine exhaust manifold failure.
While driving on highway owner began smelling unknown odor. Pulled to gas station and found that the exhaust pipe had burned insulation within 3 to 4 inches of firewall. Rug inside compartment retained heat. Had wrong insulation on firewall. Supposed to be aluminum insulation. Instead, had soft black insulation. Vehicle caught on fire.