Aircooled Engine DLC

I'd like to discuss the possibility of a DLC later down the road to cover Aircooled engines.. This is one area we will miss out on with the main game, but it shouldn't be too difficult to implement..
In terms of art, they would have to design new cylinder heads for the aircooled engines, but (correct me if I'm wrong) wouldn't they only have to design a 2, 3, 4, 5, and 6 cylinder head then slightly modify them for use the V engines? Plus the cylinder heads currently in the game could be used as a base, they basically just need to modify the outside a bit and add cooling fins.. Hell, if they really wanted to make it easy they could reuse the cylinder heads 100% and just add a piece with cooling fins that will cover it. Engline blocks could be resused, although slightly scaled down compared to Watercooled engines..
In terms of calculations it shouldn't be overly difficult either. Engine blocks would be lighter, as well as no radiators (not sure how game calculates their weight ATM) and the cylinder heads slightly heavier I would imagine with all the cooling fins. Also there should be a bonus to cooling when using Aluminium (and magnesium?) blocks and especially heads. In fact there should probably be some bonus to cooling for watercooled engines using aluminium heads..
Compared to say Diesel engines, this should actually be easier to implement. They would have minimal changes to the engine calculations, and the graphical changes would be about the same or much easier depending on how they go about it.
Discuss.
In terms of art, they would have to design new cylinder heads for the aircooled engines, but (correct me if I'm wrong) wouldn't they only have to design a 2, 3, 4, 5, and 6 cylinder head then slightly modify them for use the V engines? Plus the cylinder heads currently in the game could be used as a base, they basically just need to modify the outside a bit and add cooling fins.. Hell, if they really wanted to make it easy they could reuse the cylinder heads 100% and just add a piece with cooling fins that will cover it. Engline blocks could be resused, although slightly scaled down compared to Watercooled engines..
In terms of calculations it shouldn't be overly difficult either. Engine blocks would be lighter, as well as no radiators (not sure how game calculates their weight ATM) and the cylinder heads slightly heavier I would imagine with all the cooling fins. Also there should be a bonus to cooling when using Aluminium (and magnesium?) blocks and especially heads. In fact there should probably be some bonus to cooling for watercooled engines using aluminium heads..
Compared to say Diesel engines, this should actually be easier to implement. They would have minimal changes to the engine calculations, and the graphical changes would be about the same or much easier depending on how they go about it.
Discuss.