NejiLugia919

Hello everyone, so recently, my trans was punctured and has 3 inch hole when my axels popped of the cv flange. I must have hit something on the road as I made a right turn that made a hole on the driver side part of the trans by the gears. Would I have to get a whole new trans case or could I just weld the hole up since my transmission still works perfectly well? Thank you in advanced!