How good are you at structural welding John?
Over here that would require welding by some one with the appropriate certification & then inspection & a certificate of structural integrity by an Engineer. Lucky your not over here!!
If you can close the gap & weld it. Thats a start. I would then weld a reinforcement plate over the top with zigzag sides so that there is a long, not straight weld. That reduces the likely hood of a fresh crack developing along the edge of the welds. Being so close to the spring pearch would cause a close inspection over here.
Good Luck !!

Edit; I thought it was the long opening up & down near the spring!!

That little crack should be welded closed. You may be able to add some more spot welds as well or drill through the first layer & mig like a spot or 2.

It looks like a crack through the weld just below the "e" & another one near the bottom of the pic.
vertical up welding is not easy.

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1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
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