We don't know about the scale yet as the ACG boss never showed the picture of Tifa's body, I personally think that it will be same scale size as market's TBL phicen...Do they use the GT scale as a reference, or do they create their own scale? The last thing collectors want is something like VTS. Overscaling or underscaling would both pose problems for us.
Actually I am more concerned with the skin tone colour, I think there might have colour difference if we match the ACG HS with GT Tifa body