Boy, that's tough without actually being there to take a look. I'd grab each
axle shaft and try to twist it with the wheels on the ground to see if there
is play in the outer CV joint. Then I'd do the same with each wheel
individually raised off the ground to see if there is any play with the
inner CV joint. Also keep an eye on the drive shaft while doing this to see
if play between the ring and pinion gears is acceptable. You should also do
this with the drive shaft to make certain the U joints are okay. Good luck.