Are you sure the seats were fixed?
I know the Maserati Bora had fixed seats and movable pedals.
Now I'm going to drag out my old "Italian Job" movie with Michael Caine.
The movie starts with a camera in Miura driving through the Alps.
Until it goes into a tunnel and hits a bullldozer.
Then they drag the damaged car out of the tunnel and flip it off a cliff....
You can watch it go down the side of the mountain and as it comes apart, and the engine is missing....
Two weeks ago I found a die cast Miura in one of my my boxes of junk. It's about 6 inches long, the hood and trunk pivot, and the doors open. I forgot all about it until the recent find. It's being cleaned up for a repaint.
Wish I still had that 18 inch long plastic Miura model that I bought in 1968. It was a Japanese Miama(?) model and was motorized with pop up working headlights.