Progress has been very slow haha. But should pick up now the weather is heating up.
Lost around 1L of sump capacity. But have gained over 2L with the oil cooler etc.
The crank is above the bottom of the block, and there is a girdle/baffle attached so the bottom of the block is flat. The full line on the dipstick is only half way down the sump, so I'll just overfill it a little more.