Just wondering if this is possible. I am guessing no…
This. Your current cylinders provide support and strength to the block. Making them removable and that strength would have to come from somewhere else.The cylinder walls act as stiffening ribs to tie the deck to the rest of the block, removing those walls and replacing them with wet sleeves would cause the deck to move all over the place, leading to rapid and disasterous head gasket failure. All wet sleeve engines have extra ribs cast into the block that help to stabilize the deck since the cylinder liners don't provide that function.
How did it turn out?R and d has a 5 part series on building a 7.3 dry sleeved to I think a .020” over 6.9 bore
How did it turn out?