Usually the left cap cracks and breaks into two or more pieces and sometimes it will break the passenger side cap at the same time
OP, pick your poison, pay more now for a Dana 60 or pay for one later
I had three different 742 8 3/4 pumpkins as well as several 741 and 489 cases with solid spacer instead of the crush sleeve, I cracked the outer tips on the ring gear teeth on all of them and ended up bending the heck out of unbraced housing due launching the car hard for a lot of passes(200+) before it bent badly enough to break the welds off of the ladder bar mounts Luckily it broke them on the starting line, not going into 2nd or 3rd gear It broke a bunch of other drive line parts before bending the housing
Looking back now I should have put a Dana 60 on it to start with, but I didn't