I rebuilt it. I had never done one but it wasn't to bad. The shafts cost me around $450-$500 plus a full bearing kit and 1st to 4th syncros. You need tools tho like press pullers ect. Exchange box might be the go i have a spare one here id sell ya but freight will kill it.
Mine all up was about $1600 in parts all up with shafts bearing kit seals and clutch.