I have a lot of respect for the fabrication that took place here, but something about the final product looked off to me.
I took a picture of a 914-6:
Flipped it horizontally,
Applied the image of the new car:
Overlayed them so the door lines, roll bar, and window pillar were lined close up as possible (because these were about the only things that didn't change):
It shows how much the car changed when the 914 body was stretched over the boxster chassis. look at the original wheel position vs the new wheel position and the taller body. Also note the much taller rockers on the boxster chassis. This is what happens when you stretch a smaller body over a taller chassis.
Still an impressive amount of fabrication though...