Aluminum Crack On Top Transmission Mounting Bolt

Purchase a '03 4.6 from a explorer, firdt inspectin didn't see any major issues. During the tear down process, notice the top transmission mounting bolt has a crack along the thread, the second top mounting bolt has a small crack also. Question is can these block handle the everyday driving or has anyone had anyluck with this before. If not i'll will return it. Thanks
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