[Nmbrsix]

In the Miata world, we called that a 'foamectomy'...where you'd remove foam from the rear of the seat bottom and seat back. I did it on my car and got my head a bit below the top bar of the roll bar.

I'd love to sit lower in my car, too; it always feels like I'm sitting ON the car rather than IN it (with the stock seats).

I'd prefer to keep the car OEM, but perhaps aftermarket seats are the best option. GT3 seats are a bit confining for long drives, I think.