Head off. Mixed findings.
Rust on the valves of the centre chambers, so a head rebuild will be required. The head is otherwise good, so may be worth it.
Barrels not so good. Pot three was full of rusty water. Shame, because the other bores look clean. A wipe around with Duck Oil and scotchbrite shows the rust has etched the bore, so it would need a re bore, which would necessitate new pistons.
Which would be an expensive shame as the pistons all look good, minimal carbon, only the slightest of scuffing on the skirts. I think it might be easiest to get a new block, run a glazebuster through it and re use my existing pistons with new rings
Either way, the noise of cash registers going 'kerching' will feature prominently in my life soon. Pics to follow soon.