They look similar to the seat I use in my Pantera at the track its a sparco jr. I don't use tracks and I bolt it directly to the floor from the bottom requires some sort of spacer to lift the front of the seat about an inch and a half. Fits perfect after that. Its almost like sitting on the floor.
Those have probably been recovered to look nice.
I'm a little wider than a junior so I widened mine about two inches with a porta power unit with the cover still on. The frame is just made out of round steel tubing.
Sorry the cars not at my house so I can't shoot a picture.
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