Alright, I know its next to impossible to diagnose a noise over the internet..but here goes..

Car is a 95 GST w/MT. For awhile now it has made the occasional clunking/popping noise from the front left wheel (near the hub it sounded like) when the wheel was cut all the way to one side and I first let the clutch out in reverse.

It's started getting really bad now, and makes more of a clunking sound when I first let the clutch out in any gear (depends how hard I let out the clutch and how much gas I'm giving it, usually more gas = less clunk, and it does it most often starting off in first and switching to second) and when I let off the gas it clunks again. It will also clunk up a storm when I'm cruising slowly in first or second, and hit a bump/speedbump causing the motor to buck a bit. This part of the noise seems to be coming from the inside of the D/S axle where it plugs into the transmission. I've replaced the drivers side axle and it did not fix anything, maybe even made it worse.

I jacked the car up, and when you rotate one wheel by hand there is significant play (1/4" - 1/2")before it the other wheel starts rotating. What could cause that?

Also, someone told me this might be because the trans is low on fluid/incorrect fluid? I'll check this tomorrow..any thoughts? Thanks for any help, I really appreciate it.

TL;DR : Loud clunking noise when load changes on drivers side axle, pops when in reverse with wheel cut. Replaced axle to no avail. Help!