<VV> 66 Corvair headrests

[Bruce]

I would like to add some headrests to my 66 bucket seats that look original or close to original.  First I would like to see what 66 headrests look like and how they mount to the frame of the seats.  I can't find this information on the internet.  Can someone  provide links or photographs of original headrests or substitutes that they have found and information how to install headrests to 66 seats that never had headrests installed?  I see that Clark's sells reproduction covers.  If I could find some similar headrests, perhaps I could modify them to fit the repro covers?
Thanks.
Bruce Tester