M1111 Years:1958-64 Vertical two piece muffler and pipe, includes clamp. Custom design ready for assembly. Inlet 2" I.D. Outlet 2" O.D. For 144 CID diesel engines. Tractors: 501, 601, 701, 2000 (1958-1964). For 172 CID gas & diesel engines. Tractors: 801, 901, 1801, 4000 (4 Cylinder 1958-1964). :THIS ITEM IS EXCLUDED FROM THE $99 SHIPPING PROMOTION: