Master cylinder is empty. Doing a fill and full bleed today. Had to take the booster out to get to the rounded rearmost headbolt on the driver's side and just dumped the old fluid. But the body underneath the booster is all rusted, so I'm guessing the MC is leaking. It's very possible brake fluid got on the exhaust, but I am getting the same smoke off the passenger side cat and manifold, too.

The whole thing took me far too long, doing a little bit after work each day. Couple of months from start to finish.