I spied that too! Shame it's not watercooled. And not having a torch, no idea if it even works or not.Thought so there's a clean looking one on eBay at the moment
they're built into the base on those chassis, if you can't see the lines and top up funnel then it doesn't have one. Although like you say, you could easy attach a 3rd party cooler if you wanted.Should be water cooled thought the cooler was attached