741 gears

742 case front race HM803110 is 3.500 O.D. ,, bearing cone HM803149 is 1.750 I.D. ,,741 Case front race HM89410 is 3.000 O.D. ,, bearing cone HM89446 is 1.375 I.D. -- so you are going to need a pretty big hammer to fit a 742 gear in a 741 case.