I'll have an entire rear end for sale in a couple of weeks. It's a 29-spline 8.25 w/4:10s and an Auburn LS. It's got raised shock mounts and all new bearings and seals.
I want around $350 for it complete (drums, e-brake cables, etc.), plus shipping. The whole axle's only got 60K on it. It's from a '99 XJ that had a 2.5L and came stock w/4:10s. I just added the Auburn and put in new bearings.
It's a great deal if you're in AZ or can pick it up.