Rear differential or pumpkin is making noise and does not want to shift in gear

You can do this for the short term but it will cause damage to the front because it was not meant to be driven this way. Unfortunately the noise is most likely a bearing or gear issue so it will need to be replaced or rebuilt.

When I say short term I would not go more than a few miles at a time and not go more than a week or two. We do this on test drives but this si only a few miles.

Let me know if you have questions. Thanks