[bouncytruck]

The 4x4 cases are slightly different than a 2wd case. They are thicker at the bell-housing bolt holes and have a full aluminium fly wheel cover. It should have a big "K" on the side of the bell-housing. 2wd cases can be used in a 4wd if you change the the output shaft. I have heard that most of the rebuilts on the market are 2wd cases converted. It might be hard to sell for a lot of $ unless someone is specifically looking for a "K" case. I would try selling it on ColoradoK5 or Pirate4x4.