The 360 build that has more turns than Willow Springs

https://www.forabodiesonly.com/mopar/threads/360-la-getting-oil-in-3-cylinder.535414/page-4
Here is a thread I started about a 74 Duster 360 my brother-in-law bought. I found the headgaskets pushed out just like yours. I had the heads resurfaced, but then decided to check the block deck surface. It was pulled up at the upper row of headbolts. I could slide a .003" feeler gauge under a machinists straight edge, laid across the deck, at the locations between the headbolt holes.
See post #79.