New Old Stock Muffler for 1960 Models Mopar #2122831Muffler This is a New Old Stock Muffler for the models listed. This is a New Old Stock Mopar part in its original packaging. Models Dodge: Seneca, Pioneer, Phoenix, All Dual Exhausts with HP or Ram Manifold Desoto: 8 Cylinder, All Dual Exhausts with Ram Manifold Plymouth: 8 Cylinder, Single exhaust, High Performance or Ram Manifold Dual exhaust Chrysler: 8 Cylinder, C300 with Ram Manifold Years 1960