There are some early tractors that do not have the tapped holes
L4600F (2wd)
660 diesel with D-282 Non-Turbo charged engine
Fits: Ford (800
Quality Aftermarket 50038DB Steering Sector Gear -Fits International Tractor
Muffler vertical round body Fits Farmall H M I4 T6 W4 300 450 Tractors 350601R95 Farmall There are some early tractorsQuality Aftermarket Economy Muffler Fits International Harvester IH Farmall I4, H, M, MD, Super M, Super MD, MTA, Super MTA, T6, Super W4, W4, Super W6, WD6, 300, (350 C 175 Gas or Diesel); Super WD6, 400, W400, 450, W450 460, 560, 606 Gas or Diesel; 460, 656 Gas or Diesel with vertical exhaust, International Utility Tractors Specifications 2 1 2"" (2. 5 inches) inlet length 2 3 8"" (2. 375 inches) inlet inside diameter 13"" shell length 6"" shell