I'd bend it using heat. Obviously you'd be building it from scratch because it'll be longer than what you have, but I don't see why it wouldn't work. Looks like you could have 16-18" of straight from the arm inwards on both sides. Heat a section about 4" long til it's bright red and bend to 45 degrees or less. Wait for it to cool and repeat the opposite bend, then do the next two. Tap the ends or use the weld on ends and you'd be in good shape.
Rene
Rene

