If you're asking if anybody has mass produced a Cloud head, no, they haven't. You either get lucky and find someone willing to part with a GT head, or you grab one of the unpainted ones off ebay. There's two unpainted headsculpts on there, the one without the hair is just the game model, the one with the hair is a recast of the AC GT head. The recast one will at least be the correct size. The GT figures are underscaled, so it's likely the other is too big. It's also for that reason don't even think about buying that loose VTS head that's up for sale, it will be ginormous on the GT body.
If you have a lot of patience, hopefully GT might still be releasing this at some point in the future, and the unhelmeted head is probably the best shot people have at getting another chance at it:
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