Power Engineering out in Denver does it,too I used to work there in the late 70's,and they reweld the journals,starighten them,grind to specs,and heat treat them.
I've even seen broken cranks welded back together there,as well as stroke them. The biggest I ever saw were the cams and cranks out of the salt mines in Utah. 16 feet long.
They were at one time,the largest crankshaft rebuilding facility in the world.Probably still are.
