CASE530 AND RAM50.jpgCASE530.jpgThe oval automotive muffler is not correct, but my god did it make it quieter. I replaced the split in 3 places exhaust manifold, and with the round tractor muffler it really wasn't any quieter! Most case 530CK were diesel, but this one is gasoline fueled. So I own two, 2.6 liter 4 cylinder carbureted vehicles