What Are You Doing To/With Your Car Today?

Not sure but that could be one of those Flat Flange driver's side exhaust manifolds. Otherwise if it is a Bell Flange it could just be loose too.

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I tightened up the nuts nearest the largest leak. One was nearly 2 full turns loose. Went for a drive afterwards and was pleased to not have exhaust gases coming into the cockpit for the first time ever since I’ve had it.