[Zedn]

Check with your engineer about which ADR you are required to comply with. In NSW the seats must have a head rest that is around 860mm high. This is level or above the top of your head. The ADR states they have to be 800mm above a reference point that represents your hip. I havnt yet been able to find out exactly what this is and my engineer wasnt able to tell me with out doing a bit of research. 860mm should be safe based on previous discussions on this forum.

The MX5 seats are not tall enough to comply with the current ADR (See Baz's post).

You could try late model RX7 or RX8 depending on the style you want. I have RX7 seats, there is a pic in my gallery if you clieck the camera under my name.