bent axle

[Jason71k10]

Well i discovered that I have a bent rear axle shaft on my k-10. It's bent near the mounting flange, but for some reason I can't feel any wobble when I drive down the road, yet when I look at the wheel in the mirror, it's wobbling like crazy!!
Anyway, I want to know what parts will interchange with my axle. The truck has a 12 bolt rear with the skinny 2" drums. Will axles from any 12 bolt fit, or will the narrower drums need a shorter axle shaft? I 've thought about just swapping the whole rear end, but If I can just put in a new shaft that would be better. thanks for any help

I know this isn't the 4x4 board, but since it's a rear axle question, I posted it here also.

Jason