Whenever I post a problem, I like to post a solution.

My exhaust leak was not at the manifold. I recently adjusted valves and installed a braided stainless steel turbo oil line. To gain some room I unbolted the ALDA line and the bracket above it which holds the trans dipstick in place. Evidently, I didn't tighten the ALDA line back up after I was done. I found the line and the bolt wedged against the firewall with a a big, oily stain surrounding it. I can't believe the bolt was still there, but it was. I drove it about 100 miles in that condition.

A couple 20 cent washers and all is well again.

__________________
-----------------
1984 300D 193.5k miles
ASTM-certified B100 bio when able