Mr. Lang, I bought a rear end out of a junker years ago, and I was able to get it apart at the yard. Like you, I was transporting it in my burb! I think it may involve pulling the cover from the differential, removing the axles and unbolting the carrier assembly from the housing. I don't recall this as being particularly difficult or time consuming, but it was 30 years ago or so, and my memory may be "all wet"
Kurt