Wanted 742 pinion yoke and straps
Unfortunately there is no "742" pinion yoke. There are 4 yokes used on ALL 8 3/4 rears(except for some oddball 67's). You have the large (7290) and small (7260) u-joint and the fine (29) and coarse (18 ) spline yokes. A 742 could use any of the 4 as could a 741 or a 489. Some pinions have the fine spline and some have the coarse. The large and small is a matter of what your driveshaft will be. If you have a rear now, look at the splines to determine which one you need.
Unfortunately there is no "742" pinion yoke. There are 4 yokes used on ALL 8 3/4 rears(except for some oddball 67's). You have the large (7290) and small (7260) u-joint and the fine (29) and coarse (18 ) spline yokes. A 742 could use any of the 4 as could a 741 or a 489. Some pinions have the fine spline and some have the coarse. The large and small is a matter of what your driveshaft will be. If you have a rear now, look at the splines to determine which one you need.