I have a set Porsche 996 turbo (911) power seats. I tried to put one in my Pantera for kicks and giggles since I had them out of my 911 for some interior upgrades.
It looked good but would not work for me without dropped floor pans. My head hit the headliner.
I am sure the electric portion of the seats eats up a lot of height space. I will throw it back in and snap a photo the next time I make it to my shop.