The quality of the work that's been put into this is nothing short of amazing.
That said, the disconnect for me, as others have mentioned, is the total change to the d-pillar profile. The angle is much more vertical (which I suspect contributes big time to the appearance of a taller roof) and its a rounded corner vs. the much sharper original.
To me, the angle/shape of the d-pillar is a HUGE part of what makes the 'Cuda's profile and it has gotten totally lost here.
Still... amazing work.