broken 3;23 rear

this is my old 3;23 sg i tore up 3 or 4 years ago , its all good but i twisted the chit outa it and it cut the little pin and broke it in 1/2 , i found that in housing , unreal no gear damage .
can this get replaced or the whole taken welded full and redrilled ,or is the differential smoked willing to sell but at the prices i dont know what would be fair . the gears are perfect believe it or not but amstill looking for a good 3:91 i would think of trading the 3:23 sg i have in the car for it any options of saving this1 without a new diff. if your interested look close , mabee you can fix or give me a good offer pm me. or mabee you have 1 with a tore up gear set lets deal and help each other out