8 3/4 gears

Your 741 should have the clutch style sure grip. Easy ID is the sure grip bolts are opposite of the ring gear bolts. The cone style the bolts are on the same side. I like using a 742 carrier because they do not use a crush sleeve on the pinion as the 489. The 741 has a smaller pinion diameter

489 741 742
rrdd01.jpg .