So I've had an exhaust leak that I've been trying to pinpoint. Started off minor but has gotten worse over the last 1K miles. Thought it might be the DS manifold to Y pipe gasket but replaced that and no joy. Put muffler cement on the O2 sensor bung to hold things until Clay gets us headers made. Again, no joy. So I pulled the manifold and replaced those gaskets which made zero difference. Hmmm... Tested the coolant for combustion product contamination. Nada. Changed the spark plugs (and wires since I suffer from shipfitter's) which made me happy but did nothing for the leak. The video shows where I'm at now. Will the block/head be damaged from the leak? Won't know 'till I pull it I guess but I'm not optimistic by nature. Your thoughts?