help with 66 valiant rear axle

I have a 66 valiant 100 wagon. The rear end has been whining for quite awhile. Last few days it has been creaking and popping when I stop and start. The noise seems to be coming from the drivers side and it really whines on left curves. I kinda think it's the bearings, but not sure. Anyway, it's time to get my baby fixed.
Tearing apart the rear axle is beyond my mechanical abilities. I could handle changing out the entire rear axle. Money is a little tight at the moment and I'm trying to avoid the shop expense.
My question is what cars would have the same rear axle assembly that I could just switch out?
Any help would be greatly appreciated.