I have taken to disassembling flatheads with an impact wrench these days. I have yet to break a head bolt since I started doing that. These head bolts came out way too easily. I discovered that they were well lubricated by what appeared to be crankcase oil in the water jacket. It isn't supposed to be there.
The first head I pulled was the engine's left head - the one that covers cylinders 5-8. It looked pretty good. The pistons were standard size and there was no significant ridge at the tops of the cylinders. My hopes were up.
The right side, cylinders 1-4, was a different story. My hopes went down. The rod sticking up is the fuel pump drive rod. Often these are worn with a flash on the bottom which makes them a little tough to extract. This one had very little wear and came right out.
Although the engine didn't look too bad inside, #1 and #2 cylinders were a mess. Rusty crumbles and mouse droppings filled the intake port and cylinder on #1, while #2 had this rust "pillow" which was a new one on me. There is rust pitting around the valves and transfer areas. You can also see the oily residue in the water jacket in the large lower coolant hole on the left edge of the picture. Hopes for survival are pretty low at this point.