The hole drilling is needed if you want to keep the crack from growing. A quick fix can be to have the holes drilled if you can get to the end of the crack, then have the cracks brazed, this will reach the areas of the crack you may not be able to get the stinger to. Then weld a small piece of steel over the crack just to provide some support. It may not be pretty but it will seal the crack until you can properly address the issue.
Jeff
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