Jaws vs. Torsion Bar Crossmemer.... Suggested Fix ???

I also thought about getting a piece from a donor car, but it would probably take just as much time to fabricate some sort of brace that followed the contour of the trans tunnel. The rest of the crossmember is in good shape.
If i ground the area smooth thats all jagged and filled that in and then went over with the brace and welded it in place ?