The primary difference between sport seats and standard seats seems to be the adjustability factor of the seat itself. I haven't found anything anywhere stating that the sport seat headrests in the ZHP (which I have) are materially different from the headrests on the standard seat. Can anyone tell me if the two headrests are functionally identical? I have found several available online but don't want to shell out if they are incompatible. This relates to my "ergonomic headrest" post below, and my effort to find a secondhand headrest with which I can experiment (read: disassemble and cut holes in the inside foam cushion to see if I can make it more comfortable for me). Thanks again to all.
