I'd check the rest of the original crossmember near the torsion bar sockets, and if it seems to be a little on the thin side, I'd replace the entire crossmember. I just got done removing one while leaving the floorpans untouched, and it is not an easy job. I have about 10 hours of labor in it right now and still have to clean, prime and weld in the new crossmember then seam seal.
New Goodmark repro crossmember is $399.00 at most places I have seen.