" slightly modified " engine ! Might need to modify your bonnet " slightly " , depending which car you were trying to install it in. Not seen one like that before.
Bob
There is absolutely no reason for all the breathing pipes connecting the bottom and top of the engine. There are already sufficient inbuilt passages within the block and head for the passage of fumes/oil up and down the engine
As already mentioned above - more like a piece of conceptional art.
The toothed belt drive for the water pump and onto the dynamo/alternator is a common conversion and has worked well fitted to my Minor.