In almost every rear D44 I've done the races spin in the housing.
Replace the bearings with the new style and you should be fine.
My '88 spun and it's been fine since I replaced the bearings in '05.
Timken Set10 (or equivalent)
We did my dad's '79 Cherokee last year, and one race was so loose it just fell out.
He flat towed it home 2000+ miles with the new bearings and no issues.